Define here the length limits used when creating new bonds 
with the 
Length criterium.
Lower, Upper
When explicit bond length ranges are not defined for a given element pair,
GAMGI attempts to create default minimum and maximum bond length limits by
summing the two atom radius and multiplying the sum by 
Lower and
Upper factors. Both atom radius must be defined, otherwise the bond 
is not created.
Usually 
Lower is smaller and 
Upper is larger than 1.0.
To increase the valid bond length range, decrease 
Lower, increase 
Upper and press 
Ok. 
The 
Lower, 
Upper parameters are common to all element pairs 
and thus provide a method much less accurate (but much easier) to determine 
bonds than with 
Minimum, 
Maximum parameters. 
Element, Element, Min, Max
Setting both 
Element entries to valid atomic elements,
the current 
Min and 
Max distances to create bonds 
for this element pair are automatically shown. To explicitly define 
a new range for this element pair, set new values for 
Min, 
Max and press 
Ok.
Calling 
Bond->Config again and entering the same element pair,
the new 
Min, 
Max values appear automatically.