SET COMPATIBLE

Used to set compatibility for dimensions and multi-lines with versions of MicroStation prior to Version 4.0 or IGDS, neither of which can display these element types. It controls the following:

Whether dimensions are placed as “Dimension Elements” or IGDS-compatible primitive elements. Dimensions placed as IGDS-compatible primitive elements cannot be associated with any other element, will not automatically change if the element they dimension is changed, and must be modified manually.
Whether multi-lines are placed as multi-line elements or IGDS-compatible primitive Multi-lines placed as IGDS-compatible primitive elements consist of separate parallel line elements with line elements and arc elements as joints and endcaps. These elements will not automatically change if the elements with which they are associated are changed and must be modified manually.

To set	Key in
Dimensions to be displayable by MicroStation 3.x.	SET COMPATIBLE DIMENSION ON
Multi-lines to be displayable by MicroStation 3.x.	SET COMPATIBLE MLINE ON
Multi-lines and dimensions to be displayable by MicroStation3.x.	SET COMPATIBLE ON

To set compatibility off

Key in SET COMPATIBLE [DIMENSION | MLINE] OFF.
If Compatibility is set to 3.x, you are asked if you would like to change the setting to 4.0.

All aspects of design file compatibility with previous versions are controlled with the Compatibility user preferences (from the Workspace Menu, choose Preferences and select the Compatibility Category).