Draw Contour Label Marker Line
This command draws lines that Triangulate and Contour looks for to
control where to draw contour elevation labels. The labels are
drawn where the contour polylines cross the marker lines. These
marker lines can be drawn on a separate layer that can be turned
off for plotting the drawing.
Prompts
Layer selection dialog
Pick start point:
pick a point
Pick end point: pick a point
Pick start point (Enter to end): press Enter
Pulldown Menu Location: Surface > Contour Labels
Keyboard Command: mark_ctr_label
Prerequisite: None