.PSI File Extension
File TypePrimalScript Online Help Shortcut
What is a PSI file?
Shortcut to online help documentation for PrimalScript, a visual script development program; contains a subject header, file description, and links to online help.
PrimalScript's Nexis window displays the PSI file data as a folder. When opened, the contents of the PSI file are shown as a drop-down list of text and links.