LUPREC system variable
Function Description:
The LUPREC system variable is used to set display precious for linear units and coordinates.
Type : Integer 
Saved in : Drawing 
Initial value : 4
Range : 0 ~ 8
No matter how to set the display precious, the value for distance, area, and volume and linear coordinate internal precious are always maintained. The LUPREC does not have effect on dimension text. The dimension text is controlled by DIMDEC system variable and saved together with dimension styles.