html template library plugin?

Hi,
I can’t seem to get the right search words in google. In oXygen, my xml editor, you can create a library of xml/html. You can then insert that xml/html bit into your document, then edit it’s content in the the document.

NoNumber has something like this for Joomla called Code Templater. You create a “template” say for a call to action box. Then when ever you need a call to action you insert the template into the article. After that you can edit the html.

It seems that in WordPress, if you have a code snippet library, you can’t edit it after placing in the post, so you’re stuck with using the same code in every post.

Is there a plugin for this?