Measures formatting enables you to globally format one dimension used by an OLAP database connection. This global formatting includes leading and trailing characters, numeric formatting of numeric dimension values, and header and data formatting.
Measures formatting options differ from those of data formatting and default formatting preferences. See Formatting Order of Precedence.
You can define measures formatting using an explicit member selection or advanced member selection. Using advanced member selection makes the measures formatting dynamic. As members are added deleted and changed in the database, the formatting maintains itself and does not become obsolete.
See Creating OLAP and Oracle | Hyperion Database Connections.