&DENOM
Controls the smallest fractional increment to which all dimensional values will be rounded. If a value of 8 is specified, the smallest unit for any dimension will be rounded to eighths. Dimensions which round to a lower denominator which is a multiple of eight are created to that denominator (e.g., 1/2, 1/4).
&DENOM has no effect if the Fraction Display Type (the &FTYPE GPA) is set to decimal (the &DECIM GPA).
Read/Write - Number - [1,2,4,8,16,32,64]