If, in the case of statements for which both a line number and an increment can be specified (e.g. @SET, format 6), only a line number is specified then the increment is implicitly defined by the specified line number (the line number and increment may be either the current line number and current increment or may take the form of specifications which apply only to the statement in question).
If the expression which defines the line number contains only line number variables
(#L0..#L20) or symbolic line numbers (%,*,$,?) or integer variables (#I0..#I20) or relative line number specifications (nL) or a combination of these then the new current increment is 0.0001.
If a numerical line number specification forms part of a statement then the number of decimal places in this numerical line number specification (maximum 4) determines the current increment. If no decimal place is present then the current increment is 1, if one decimal place is present then the current increment is 0.1 etc.
If four decimal places are present, the current increment is 0.0001.