[TYPO3] documentation for |*| in allWrap

[Felix Natter]

hi,

in the mailinglist-archive I found a solution for putting |-separators
only between menu items (and not at beginning + end).

This works for  me:
  NO.allWrap = |*| <div class="menu2-normal">|</div> &nbsp;&#124;&nbsp; |*| <div class="menu2-normal">|</div>

But what does this |*| mean? Why do I have 2 "|"?
Where can I find documentation about this?
I looked in the datatype reference of doc_core_tsref, but
it only mentions "<div class="foo">|</div>" style wraps.

thanks,

-- 
Felix Natter