CAD > Snap > Trace Cline Snap

Snap to selected corners along a construction line segment. This snap mode can be used as a quick method for building DDLoops ( CAD > Build > DDLoop), FFLoops ( CAD > Build > FFLoop) and Tunnels ( CAD > Build > Tunnel).

To use this snap mode you simply pick the start and end points along the desired construction line segment and all point between these will be automatically selected. For example if you select points 4 and 9, points 5, 6, 7 and 8 will automatically be selected. Note that if you select the same point twice, the entire loop will be selected.

Notes:

The location of all points along construction lines can be viewed by setting the View > Render > Cline dot radius parameter.

Before using this trace snap mode, construction lines should be cleaned up using the CAD > Pack and Renumber Clines function.

The CAD > Edit > Smooth Construction Lines function can also be used to aid in cleaning up construction lines.