The diagrams for Multidimensional Expressions (MDX) syntax in the MDX Language Reference use these conventions.
|italic||Indicates user-supplied arguments of MDX syntax.|
|| (vertical bar)||Separates syntax items within brackets or braces. You can select only one of the items.|
||Indicates optional syntax items. Do not type the brackets.|
|[,] ...n||Indicates that the preceding item can be repeated any number of times. The items are sometimes separated by commas.|
|<label> ::=||Indicates the name for a block of syntax. This convention is used to group and label portions of lengthy syntax or a unit of syntax that can be used in more than one place within a statement. Each location in which the block of syntax can be used is indicated with the label enclosed in angle brackets: <label>.|