Tobias Thanks for the answer. It was very usefull.
PS: For those [strange people :) ] interested in XY-pic (http://en.wikibooks.org/wiki/LaTeX/Xy-pic), I'm converting this examples (http://sonoisa.github.io/xyjax/xyjax.html) in TWC to TW5 to use later in a project. Suspending de pre-parsing of some symbols was necessary. You guys are awesome! AMFVargas -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/d/optout.

