I created this to emulate the look-and-feel of Windows Explorer, where you click on the in front of a folder to expand the list and show sub-folders, which is then replaced by the to click on and contract it. The code I use to produce this can be seen in plus_minus.pl.
in front of a folder to expand the list and show sub-folders, which is then replaced by the
to click on and contract it. The code I use to produce this can be seen in