There is nothing installed as hidden. Offered software has special screen in installer process. When you uncheck it, nothing is installed.
When you use silent installation (/silent switch), all offered software is disabled, so you can install PSPad via command line. You can download ZIP package and use PSPad without installation. I can publish INNO Setup installation script content or anything else you are interested of. Or you can decompile installation package yourself to see the content. -- <http://forum.pspad.com/read.php?2,59900,59901> PSPad freeware editor http://www.pspad.com
