A dimension style is
a saved set of dimensioning settings. The Dimension Styles dialog lets you
create and manage dimension styles.The options are organized under tabs, and a
preview area lets you quickly view style modifications. Dimension styles can be
stored in either the open DGN file or a DGN library.You can define dimension
styles and apply them to dimension elements during placement. Dimension styles
can be created, customized, and saved for easy recall. Changes made to a
dimension style propagate to all dimensions previously set with the dimension
style in the DGN file.Dimension styles can be stored in a DGN library and used
in a DGN file. Changes made to the dimension style (from a dimension style
library) within a DGN file are called overrides if the style is not saved.
Dimensions placed with overrides do not change if the style is changed and
saved. To remove the override, the Change Dimension tool can be used to match
the Dimension Style.The active dimension style is used by the Dimensioning
tools.