Overview of Demand Loading

Provides a high-level description of using demand loading to improve performance when working with large referenced drawings.

The program uses demand loading and saving drawings with indexes to increase performance with large referenced drawings that have been clipped using the program or that have many objects on frozen layers. With demand loading, the program loads into memory only the data from the reference drawing that is necessary to regenerate the current drawing. In other words, referenced material is read in “on demand.” Demand loading works in conjunction with the INDEXCTL, XLOADCTL, and XLOADPATH system variables.