2D Polyline

A 2D polyline is a line of connected points that have the same elevation. This command lets you digitize a 2D polyline by picking points along the lines on the drawing. It prompts you first the Polyline 2D Options Dialog for entering the layer name. Prompt For Polyline Elevation option allows you to enter the elevation for each polyline, otherwise all 2D polylines have 0.0 elevation. Auto-Zoom mode would automatically zoom the display to center around the last point when you get near the edge of the screen while picking points. There are three ways to enter a layer name, Use current drawing layer, Select from a list of layer name, or Pick an entity on the screen to get its layer name. While digitizing a polyline, the command keeps prompting you to either pick the next point or press 0 to create an Arc until your press Enter to finish digitizing. Press A on the puck or enter Close on the keyboard to close the polyline on itself. You can define an Arc by Radius, Arc length, Chord length, Delta angle, or by simply picking 3 points along the arc. If at any point you make a mistake, press B on the puck or enter Undo on the keyboard to remove the mistake and then continue to digitize. After finishing a polyline, the command prompts you to digitize another polyline until you press B or enter No.
      

Prompts

Polyline 2D Options Dialog
Enter the layer name and select the options of Prompt For Polyline Elevation and Auto-Zoom mode etc.
Enter default elevation <0.00>: 100
First point:    pick a point on the drawing using puck
Segment length: 0.00, Total length: 0.00
Arc[0]/Close[A]/Undo[B]/Osnap[.]/Pick next point (Enter to end): pick next point
Segment length: 119.03, Total length: 119.03
Arc[0]/Close[A]/Undo[B]/Osnap[.]/Pick next point (Enter to end): pick next point
Segment length: 115.23, Total length: 234.26
Arc[0]/Close[A]/Undo[B]/Osnap[.]/Pick next point (Enter to end): press 0
[Radius[0]/Second pt[A]/Undo[B]/<Pick Endpoint>]: press A
Second point or point number: pick a point along the arc
Endpoint or point number: pick the last point along the arc
Segment length: 500.82, Total length: 735.08
Arc[0]/Close[A]/Undo[B]/Osnap[.]/Pick next point (Enter to end): pick next point
Segment length: 115.23, Total length: 850.31
Close[A]/Undo[B]/Pick next point (Enter to end):    press enter to finish digitizing or press A to close the polyline
Digitize Another FINAL Polyline [Yes(A)/<No(B)>]?    press A on the puck or enter Yes on the keyboard to digitize next 2D polyline, press B on the puck or enter No on the keyboard to finish digitizing 2D polyline.

Prerequisite: Have a digitizer board and a puck connected to your computer, and have Wintab driver installed. The digitizer has been correctly set up. Have done tablet calibration for current drawing.
Keyboard Command: dig_2dp