CYANA Function: ibond
ibond(integer,integer) = integer
This function returns the index of the m-th atom that is covalently bound to the atom whose index is given as the first argument. The integer m = 1, 2, 3, 4 is given by the second argument of the function The function returns 0 if less than m atoms are bound to the selected atom.
Optionally, the integer atom index of the first argument can be replaced by a string consisting of the atom name and the residue number, separated by a blank or a period, ..