If you can get a newer copy of RSLinx Lite, they sometimes have RSLadder 5 and RSLadder 500, a view only software on the CD. These are just Active X programs you can run to view code only.
I’m not sure that this fits with what you’re trying to accomplish ... but ...
if all you want to do is “look at” a copy of the program ... and you already have the .RSP or .RSS, or .L5K, etc. program file on disk ... then you can zip the file and attach it to a post on this forum ... if you say “please” some kind soul will usually come along and convert the program to a .PDF file for you and post the results ... you can then page through the .PDF with the free Acrobat Reader or print it out as necessary ...
you’ll probably have to register to attach a file ... and here’s a