Install libhtml-popuptreeselect-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libhtml-popuptreeselect-perl
Description:
Perl module for HTML popup tree widget
This module creates an HTML popup tree selector. The HTML and Javascript produced will work in Mozilla 1+ (Netscape 6+) on all operating systems, Microsoft IE 5+ and Safari 1.0. The design of these widgets are based on the xTree widget from WebFX.
Homepage: http://search.cpan.org/dist/HTML-PopupTreeSelect/
Version: 1.6-7
Section: universe/perl