Could anybody please help me figuring out what the different beasts in
math are?  Currently there is a hierarchy that looks like:



                                    Inset
                                (abstract base)

                         /            |             \

              Dim                  Char                   MacroArg
         (thing that need       (for things formerly 
          the width_/ascent_     known as characters) 
          /descent_ cache)
        
          /             \

       Nest              Dots  Func  Space  Symbol
  (for thing with      
   nested content)     

                                |         \

      Grid        Decoration   Delim   Frac  Macro  Root  Script  Sqrt

      /   \

 Array     "Matrix"
         (base for eqnarray/align/...)




The current "Symbol" inset is probably a bit to big, it contains things
like

  \int, \sum  (i.e. things that grow in displayed environments and can take
               limits)

  greek characters  (that can't take limits)

  \sup, \inf   (thing that don't grow, aren't exactly symbols, but take limits)

and probabably a few more (some seemingly inserting extra space around
themselves, when drawn, like '+' and '-')


So the question is:

What groups of "symbols" exist for LaTeX?
What "characteristics" do they have?

Andre'

-- 
André Pönitz ............................................. [EMAIL PROTECTED]

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