8FUNCTIONS: matchangle - CYANA function

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

This logical function returns 1 (true) if the first argument is
the index of a dihedral angle that is matched by the dihedral angle
selection of the seconand argument, or 0 (false) otherwise.

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