This command labels the selected polylines with either the
entity "Handle", which can be seen with a list, or with unique text
numbers, such as 1, 2, 3, 4, etc.. When using the Text option, the
following window appears to choose the text settings.
Select Polylines to label.
Select objects: pick polyline
Label polylines by Text or Handles [Handles/<Text>]?
press Enter
Pulldown Menu Location: Edit > Polyline Utilities
Keyboard Command: label_polys
Prerequisite: A polyline