Assistance understanding a UNIX script

Hello, If I could get some assistance breaking down this Unix script in order to better understand it. A co-worker wrote this script and is no longer with us. I believe this script converts documents into .txt files, but we are trying to edit it so that it converts documents to .pdf automatically instead of .txt

*Please see attached. Thank you in advance!

No problem, but PLEASE: put it here in plain text format and enclosed in CODE-tags. Looking at a graphics-file in PNG-format, which will explicitly forbid copying and pasting as a means to refer to certain parts is simply ridiculous.

Thanks in advance.

bakunin

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