Thanks but I have done just a few maintenance releases. Joe Mucchiello is the original author.

Re: Autotags
I wouldn't bother making it "3 parameters". Just add a function to parse the p0 text. So the user could do this in an autotag:

[ tag:abc key1:value1 key2:value2 key3:v3 etc ]

The function AUTOTAG_ParseTag() where you pass the $p0 parameter from the autotag plugin and it returns an array { 0=>abc, key1=> value1, key2=>value2, etc }