units
Specifies the number of time units per second.
Syntax
units integer
Comments
For file formats with a "Time" request, it is often useful to specify what units time is in. The integer specified is the number of units per second. Thus, if the time values in your file are in milliseconds, then you have 1000 time units per second and you would specify 1000 as an integer.
Example
units 100 // hundredths of a second