Thread:The Reficul/@comment-27448112-20170623165407/@comment-27448112-20170624071644

  is a parser function. The basic form of a parser function would be this:

Basically, the vertical bar is used to separate arguments. Using   only requires two arguments: the type of tag ( ), and the contents of the tabber. If you use another vertical bar directly, it will trigger a non-existent third argument, which would, of course, cause the whole thing to break. That's why we use   to use a vertical bar without triggering another argument.

Capiche?