QCAD is a free, open source application for computer aided drafting (CAD) in two dimensions (2D). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. QCAD works on Windows, macOS and Linux. QCAD Professional is the paid version that includes additional advanced drawing tools and supports more file types, most notably AutoCAD dwg and MicroStation dgn files.
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Commands for adding elements to the drawing. All commands are entered at the Command: prompt or while the focus is on the drawing area.
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WL
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Activate the Line CAD Tools
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LI
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Line using 2 points
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LA
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Line with a specified angle and length
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LH
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Horizontal line (like LA with 0 angle)
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LV
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Vertical line (like LA with 90 angle)
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LB
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Draw 2 (or more) bisectors between 2 lines
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LP
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Parallel with distance
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LG
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Parallel through a point
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LT1
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Tangent between point and circle, arc or ellipse
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LT2
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Tangent between two circles, arcs or ellipses
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LN
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Orthagonal to a line and tangent to circle, arc, ellipse
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LR
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Line with a relative angle
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LO
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Orthagonal (perpendicular) line
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LF
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Freehand line drawing
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WP
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Activate the Point CAD Tools
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PO
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Single Point
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PN
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N Points on a Line
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PM
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MxN Grid of Points
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WA
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Activate the Arc CAD Tools
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AR
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Center, Point, Angles
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AD
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Two points and Radius
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A2
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Two points and Angle
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AL
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Two points and Length
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AH
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Two Points and Height
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A3
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Three Points
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AC
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Concentric with Distance
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AG
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Concentric through Point
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AN
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Tangentially connected
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AT
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Tangent, Point, Radius
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WC
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Activate the Circle CAD Tools
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CI
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Center, Point
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CR
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Center, Radius
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CA
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Center, Diameter
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CD
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2 Points and Radius
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C2
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2 Points
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C3
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3 Points
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CC
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Concentric with Distance
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CG
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Concentric through Point
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CT1
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Tangent and 2 Points
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CTP
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Tangent, Point, Radius
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CT2
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2 Tangents and Point
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CTR
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2 Tangents and Radius
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CT3
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3 Tangents
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WE
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Activate the Ellipse CAD Tools
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EP
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Center, Point and Ratio
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EA
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Center, Major & Minor Axis, Start & End Angles
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EI
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Radii
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ED
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Diameters
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EC
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Parallel Curve with Distance
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EG
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Parallel Curve through Point
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EQ
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Inscribed in Quadrilateral
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WN
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Activate the Spline CAD Tools
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SP
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With Control Points
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SL
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Fit Points
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NI
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Insert Fit Point in existing spline
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NA
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Append Fit Points to existing spline
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NR
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Remove Fit Points from spline
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NP
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Simplify existing spline
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WO
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Activate the Polyline CAD Tools
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PL
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Polyline
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OG
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Convert connected lines & arcs
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OL
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Partial polyline from selected segments
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OA
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Insert Node
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OP
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Append Node(s)
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OP
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Delete Node(s)
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OB
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Remove Nodes between 2 Nodes
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OT
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Trim Segments
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OR
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Relocate Start Point
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OX
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Change Segment Type
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-
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Arc to Line Segments
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OQ
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Offset
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OM
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Morph
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OS
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Simplify
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ON
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Normalize
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OE
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Logically close Polylines
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OJ
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Logically open Polylines
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WH
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Activate the Shape CAD Tools
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RE
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Rectangle
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RS
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Rectangle with Size
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R3
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Rectangle with 3 Sides
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PG1
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Polygon (Center, Corner)
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PG2
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Polygon (2 Points of Side)
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PG3
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Polygon (Center, Side middle Point)
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PG4
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Polygon (Side, Side)
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PT
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Star
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WX
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Activate the Hatching CAD Tools
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HA
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Hatch from Selection
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HS
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Hatch from Segments
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VT
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Add Viewport
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RI
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Add ring (donut)
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TE
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Text
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IM
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Insert Bitmap
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2PF
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Batch2PDF Visible Layout Blocks
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TH
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Select By Handle
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TF
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Select By Color
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XH
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Draw Horizontal Construction Line
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XV
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Draw Verticle Construction Line
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CS
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Draw Centerline Cross
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C12
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Draw Counter
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TG
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Draw Text Along Entity
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LJ
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Draw Box Joint from 2 Points
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S3
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Draw Polyline Break Symbol from 2 Points
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GE
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Development: Script Shell
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XC
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Development: Run Script
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P3
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Draw 3 Points
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Keybindings can be tweaked under Edit: Application Preferences under the General / Tool Settings option..
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Commands to manipulate existing drawing objects.
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WM
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Activate the Modify CAD Tools
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MV
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Move / Copy Selection
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RO
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Rotate Selection
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SZ
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Scale Selection
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MI
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Mirror Selection
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FH
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Flip Horizontal
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FV
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Flip Vertical
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MR
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Move AND Rotate
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R2
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Rotate entities around Center Point
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AE
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Align Reference Points
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MA
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Align
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OF
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Offset with Distance
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OH
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Offset through Point
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RM
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Trim
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TM
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Trim Both
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LE
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Lengthen / Shorten
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SS
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Stretch
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CLR
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Clip to Rectangle
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CH
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Chamfer / Bevel
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RN
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Round corners
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DI
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Divide
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MS
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Split Entities
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D2
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Break out Segment
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B2
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Break out Manual
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AX
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Auto Trim
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D3
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Break out Gap
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RV
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Reverse
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MT
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Edit Text
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ML
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Edit Tolerance
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MH
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Edit Hatch
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XP
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Explode
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PI
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Property Painter
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MD
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Detect Duplicates
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MZ
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Detect Zero-length Entities
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MF
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Bring to Front
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MB
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Send to Back
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MO
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Reorder
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MC
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Order Connected Entities
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WJ
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Activate the Project CAD Tools
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PR
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Orthographic Projection (Cylindrical)
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PJ
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Isometric Projection
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PC
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Isometric Projection (Cylindrical)
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MX
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Matrix Transformation
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Add dimensions and call outs to drawing elements.
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WD
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Activate the Dimension CAD Tools
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DA
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Aligned
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DL
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Rotated (Linear)
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DH
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Horizontal
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DV
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Vertical
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DB
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Baseline
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DC
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Continue
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DO
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Ordinate (X/Y)
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DE
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Leader
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DT
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Datum
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TO
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Tolerance
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DR
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Radial
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DD
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Diametric
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DN
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Angular
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DG
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Arc Length
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DS
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Reset Label Position
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WI
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Activate the Information CAD Tools
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IO
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Position
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IV
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Relative Position
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IL
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Polar Position
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IT
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Relative Polar Position
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IP
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Distance Point to Point
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IE
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Distance Entity to Point
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IN
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Distance Entity to Entity
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IA
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Angle
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IS
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Total Length of Selection
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IR
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Polygonal Area
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IC
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Arc/Circle/Ellipse Area
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II
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Polyline Area
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YV
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Toggle Visibility
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YF
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Toggle Frozen Status
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YL
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Toggle Lock Status
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YO
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Show Only Active
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YS
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Show All Layers
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YH
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Hide All Layers
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YW
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Thaw All Layers
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YK
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Lock All Layers
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YN
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Unlock All Layers
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YA
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Add Layer
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YU
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Add Sublayer
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YT
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Create Layer from Selection
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YY
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Duplicate Layer
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YR
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Delete Layer(s)
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YP
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Purge Unused Layers
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YE
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Edit Layer
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Y+
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Select Layer Entities
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Y-
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Deselect Layer Entities
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YM
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Add Layer State
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XP
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Explode
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BV
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Toggle Visibility
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BS
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Show All Blocks
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BH
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Hide All Blocks
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BA
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Add Empty Block
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BC
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Create Block From Selection
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BL
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Add Layout Block
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BR
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Remove Block
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BP
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Purge Unused Blocks
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BN
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Rename Block
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BE
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Edit Block
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BD
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Edit Block From Reference
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BB
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Edit Block in Place
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BY
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Duplicate Block
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EM
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Return to Main Drawing
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B+
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Select Block References
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B-
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Deselect Block References
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BI
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Insert Block
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BT
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Create Library Item
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Attributes
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UA
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Define Block Attribute
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UY
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Synchronize Attributes
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Changes how the cursor interacts with drawing objects.
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SF
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Free (Rarely Used)
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SG
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Grid
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SE
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End
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ST
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On Entity
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SU
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Perpendicular
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SB
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Tangential
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SC
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Center
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SR
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Reference
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SM
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Middle
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SN
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Middle Manual
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SD
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Distance
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SH
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Distance Manual
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SI
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Intersection
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SY
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Intersection Manual
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SA
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Auto
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SX
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Coordinate
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SO
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Polar Coordinate
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.X
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X/Y From Points
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.Y
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Y/X From Points
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SK
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Center of Selection
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EN
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Restrictions Off
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EO
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Restrict Orthogonally
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EH
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Restrict Horizontally
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EV
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Restrict Vertically
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EL
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Restrict Angle or Length
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RZ
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Set Relative Zero
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RL
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Lock Relative Zero
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SQ
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Lock Snap
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DF
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Toggle Draft Mode
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NL
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Toggle Screen Based Line Types
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NT
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Toggle Anti-aliasing
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GR
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Toggle Grid
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Zoom
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+ (plus)
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Zoom in
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- (minus)
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Zoom out
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ZA
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Auto zoom
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ZS
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Zoom to selection
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ZV
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Previous View
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ZW
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Zoom Window
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ZP
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Pan
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Overlays
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VD
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Direction
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VO
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Order
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VS
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Startpoint
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Stored Views
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VA
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Add View
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JO
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Isometric Grid Off
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JT
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Top Projection
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JR
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Right Projection
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JL
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Left Projection
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GY
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Layer List
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GB
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Block List
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GV
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View List
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GP
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Property Editor
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GF
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Selection Filter
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GL
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Library Browser
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GM
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Command Line
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GC
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Clipboard Display
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GS
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Status Bar
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Space
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Focus on Command Line
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Ctrl+Space
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Focus on Options Toolbar
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Ctrl+Shift+Space
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Focus on Tools Matrix
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F8
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Display Distance/Angle
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TN or Ctrl+Shift+A
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Deselect All
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TA or Ctrl+A
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Select All
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TV
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Select View
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TI
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Invert Selection
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TR
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Select Rectangular Area Toggle
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TP
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Select Polygon Toggle
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TC
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Select Contour Toggle
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TX
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Select Intersected Entities Toggle
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TL
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Select Layer Toggle
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Ctrl+Shift+W
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Close All
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Ctrl+Right
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Next
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Ctrl+Left
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Previous
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F11
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Toggle full screen
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Ctrl+W
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Close window
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Ctrl+Shift+I
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Import
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Ctrl+N
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New Drawing
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Ctrl+O
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Open Drawing
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Ctrl+P
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Print Drawing
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Ctrl+Alt+P
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Print Current View
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Ctrl+Shift+P
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Open Print Preview
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Ctrl+S
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Save Drawing
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Ctrl+Shift+S
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Save As
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Ctrl+Shift+N
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New Drawing from Template
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Ctrl+R
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Revert
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FI
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Show in File Manager
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XB
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Bitmap Export
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XS
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Quick SVG Export
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XD
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PDF Export
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Ctrl+, (comma)
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Open Application Preferences dialog
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Ctrl+C
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Copy
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Ctrl+Shift+C
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Copy with reference
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Ctrl+X
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Cut
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Ctrl+Shift+X
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Cut with reference
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Del, Backspace
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Delete
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Ctrl+I
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Open Drawing Preferences dialog
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Ctrl+V
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Paste
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Ctrl+Shift+V
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Paste along Entity
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Ctrl+Shift+Z
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Redo
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Ctrl+Z
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Undo
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Ctrl+F
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Find/Replace
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OO
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Undo
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UU
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Redo
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ER
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Delete
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RT
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Cut with Reference
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CP
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Copy
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RC
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Copy with reference
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PS
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Paste
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PE
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Paste along Entity
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DP
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Duplicate
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RP
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Find/Replace
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FF
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Substitute Fonts
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MG
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Scale Text Heights
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CU
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Convert Drawing Units
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Esc
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Escape
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QQ
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Reset / Idle
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Quick Modify
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Right Arrow
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Move Right
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Left Arrow
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Move Left
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Up Arrow
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Move Up
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Down Arrow
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Move Down
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F5
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Rotate Counter Clockwise
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F6
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Rotate Clockwise
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