Perl is a scripting programming language. Perl file has extension of *.pl. You can edit it with Notepad or any other text editor.
To use Perl with QuickField Object Model and Parametric Object Interface you might need to install Win32::OLE module. Active Perl distributed by ActiveState Software Inc. is already supplied with this module and available for free download.
Examples on using QuickField with Perl:
Relay dynamics simulation using Perl and Parametric API
Relay dynamics simulation using Perl and ActiveField (QuickField Object Model)