Allocation

 The allocation  size  routines  provide  information  about  the
 amount  of  storage  allocated  for  variables and components of
 various types.  The parameters may be in the form of variable or
 type  identifiers.   Each  routine returns an integer value that
 represents the allocation size of the given parameter.

Additional information available:

BITNEXT         BITSIZE         BIT_OFFSET      BYTE_OFFSET     NEXT
SIZE