When you set as default the properties from parts or drawings on a screen, the same attributes become the default when drawing parts and graphics on other screens.
The default settings remain valid until they are cleared. Using this feature, you can reduce the number of steps in your drawing process as there is less changing display properties, and less copying and pasting parts and graphics between projects and screens.
8.7.4.1 Procedure - Using Screen Parts or Drawings to Set As Default