8FUNCTIONS: matchatom - CYANA function

Synopsis: matchatom(<integer>,<string>) = <integer>

This logical function returns 1 (true) if the first argument is
the number of an atom that is matched by the atom selection of the
seconand argument, or 0 (false) otherwise.

Optionally, the <integer> atom index can be replaced by a string
consisting of the atom name and the residue number, separated by a
blank or a period, '.'.
