Make it possible to detect event numbering for output parameters

[McTwist]

Some output events apply a list of event indexes. Somehow try to detect and parse it to add indexes in a correct manner.

Along with this, if possible, add labels to be used. This will solve copy/paste onto existing events.

[McTwist]

Doing this "automatically" by parsing the input would be bad, so instead add support depending on the output name for those that have the feature.