This is a note to describe which functions in the structures library are
called from which ambig top-level source files. The source files in
this library are:

	1. arrow.[chg]
	2. box.[chg]
	3. box-relations.[chg]
	4. sysname-hash.[ch]	(never called by ambig)

There are 3 top-level source files comprising ambig. Here is a list of
which functions they call in this library (the number in parens
corresponds to the number of the source file above in which the called
function resides).

ambig.c:
  none

call-extract.c:
  (1) AddArrow()
  (1) ConvertParity()
  (2) AddBox()
  (2) FormAtomNonatomLists()
  (2) NumberOfBoxes()
  (2) ConvertBoxRole()
  (2) ConvertBoxName()
  (3) InitBoxRelations()
  (3) AssertParentOfContainment()
  (3) AssertChildOfContainment()

top.c:
  (3) CloseAllBoxContainmentRelations()
  (3) ComputeAllCrissCrossesRelations()
