Intramolecular molecular distances are considered 'bonds' when their
separation is less than the sum of the partaking atoms covalent radii
plus of tolerance (TOLA).
TOLA can be changed to 0.0, 0.2, 0.4, 0.6 respectively by clicking
in the appropriate box.
Default value = 0.4 Angstrom [Par(2)]
A prior 'RESET' will be needed when clicking has no effect.
SET TOLA
PLATON HOMEPAGE