CAPTCHA add-on is great but the instructions a somewhat nuclear:

readme.txt says
1. Unzip and upload all new files to your store directory;
but it also says
Use applied files as a sample. All changes of a code are made in brackets
/
/ BOF CAPTCHA
... code ...
// EOF CAPTCHA
{{ incomplete list of files goes here }}
which I interpret as "do not overwrite existing files in zen cart but rather manually patch the files based on the differences".

Am I right?

If so, how do I treat files that do not exist (yet) in my template? just copy them over?

Is there better documentation/tutorial to this excellent add-on?

Thanks you, Joe