"Push" seems like a poor name for this.
Well, what name do you think is best?
I also wouldn't lump HTML::Seamstress and XMLC in with Template::Recall and StringTemplate. As you know, the former use an approach based on the HTML/XML document structure, while Template::Recall and CGI::FastTemplate do a much simpler regex-like substitutions.
If you focus on _how_ they do their job, they are different. If you focus on the fact that they achieve what Terence Parr defined throughout his article, then Template::Recall
are very similar.
And again, with both Recall and Seamstress, you must adhere to a certain discipline while with TT and others you can adhere if you please, but dont have to.