Thanks @abject39, that’s all good for layer protection, which is another option I could use!
I’m still keen to protect just a script on it’s own (like those docs say) if such a thing were possible.
However, between the answer I posted above, and your accurate comment, I do have two viable
options to be going on with.
I would suggest creating a duplicate preset as a back up just in case you make an error.
Indeed - always good advice!
Thanks again,
P.