For POTEntial=SQUAre-well, a square-well function is used:

where is defined as

**S** is the scale factor specified by the SCALe statement, **C** is the scale
factor specified by the SQCOnstant statement, and **d**, , and
are specified by the ASSIGn statement:

The exponent **exp** is specified by
the SQEXponent statement and
is specified by the SQOFfset value.
The distance **R** is defined in Section 18.2.

Sat Mar 11 09:37:37 PST 1995