Obviously, you can select one section of track by simply clicking it.
However, you can also use the mouse to select several pieces of track, and then move or alter them as one.
To select track
Before:
After:
AnyRail bolds the selected pieces.
To deselect a single piece
CTRL-click the piece.
To deselect all the pieces
Press ESC.
NOTE: You can also copy, paste and delete track in the standard Windows way.
TIP: If you open AnyRail twice, you can copy and paste elements from one layout to the other.
Page url: https://www.anyrail.com/help_en/index.html?selectingtrack.htm