You can view all themes or individual themes for a feature class, as well as import and export theme definitions.
Click Manage Display and select a theme tool (Feature, Terrain, or Point Cloud).
In any of the Theme Palettes, specify the individual themes to display using the View drop-down menu. For example, you can specify all themes for a particular feature class, or an individual theme for that feature class. To display only active themes, select Active Only.
Active themes are those that are selected in the list of themes in the lower part of the palette.
In the list of themes, do any of the following:
Click (Export Themes) to export theme definitions.
Exported theme ranges are displayed in a group or a column.