ADDSYM TolMetric
This value is used to find 2-axis in the lattice as defined by the
maximum angle between a direct and reciprocal space direction with
scalar product 1 or 2.
The default is 1 degree.
The click positions (from left to right) correspond to 0.2, 0.4, 0.6,
0.8. 1.0, 1.2 Degree.
PLATON HOMEPAGE
5-Dec-2003 A.L.Spek