What do you mean by keyword? I was looking at action rules and see rule names, descriptions, etc. - not seeing something that says keyword.
You could likely do this by scripting it in SQL or whatever your database backend is. Depending on what you are wanting to add, it might be very easy.
when looking in the Action Rules, hit the "Criteria" tab and there you can add conditions/criteria like;
Client is -
Location is -
Subject contains -
I have a total of 497 words that I want to add in to "Subject Contains"
Surely, I can just chill with some coffee and paste then all in, one by one... but before I start that party, I'd be curious to see if anyone has come across something like this before.
There is some sort of limit to the amount of criteria lines you can have in an Action Rule, simply meaning that you'll require numerous Action Rules to fulfil your possible 497 words.