NAME
    ParentChunk -- Get the nesting context node for the given chunk.

SYNOPSIS
    parent = ParentChunk (cn)
      d0                  a0

    struct contextnode *parent, *cn;

FUNCTION
    Returns a context node for the chunk containing the chunk for the
    given context node.  this function effectively moves down the context
    stack into previously pushed contexts.  For example, to get a
    contextnode pointer for the enclosing form chunk while reading a data
    chunk, use: ParentChunk (CurrentChunk (iff)) to find this pointer.
    The contextnode structure contains information on the type of chunk
    and its size.

INPUTS
    cn      - pointer to a context node.

RESULT
    parent  - pointer to the enclosing context node or NULL if none.

EXAMPLE

NOTES

BUGS

SEE ALSO
    currentchunk()