DIMLUNIT system variable
Function Description:
The DIMLUNIT system variable is used to set units for all dimension types(except angular dimension).
Type : Integer 
Saved in : Drawing 
Initial value : 2 
Range : 1,2,3,4,5,6
System Variable Value:
1 : scientific
2 : decimal 
3 : engineering
4 : architecture (always stacked displaying)
5 : fractional (always stacked displaying) 
6 : Microsoft Windows Desktop (decimal format using Control Panel settings for decimal separator and number grouping symbols)