SCALAR

VARY

 Syntax: SCALAR\VARY s1 { s2 ... }

 The SCALAR\VARY command defines sI to be a scalar variable and allows sI
 to vary during a FIT. If sI already is a scalar, the value of sI will be
 unchanged. If sI is an existing variable, but not a scalar, it will be
 destroyed first. If sI does not exist, it will be created and initialized
 to 1.

 Use the SCALAR command with no qualifier to fix a scalar, that is, to not
 allow it to vary in a fitting procedure.

DUMMY

 Syntax: SCALAR\DUMMY s1 { s2 ... }

 The SCALAR\DUMMY command defines sI to be a scalar dummy variable for use
 in functions requiring dummy variables: LOOP, SUM, PROD, RSUM, and RPROD.
 If sI is already a scalar, it is turned into a scalar dummy variable. If
 sI is an existing variable, but not a scalar, it will be destroyed first.
 If sI does not exist, it will be created.