Active data frame

active data frame
[ESRI software] The data frame currently being worked on-for example, the data frame to which layers are being added. The active data frame is highlighted on the map, and its name is shown in bold text in the table of contents.

Switch active data frames
A single map document may have more than one data frame. A data frame contains a number of layers with similar thematic properties and covering the same area of ground.

In ArcMap, the tool used to display and set labeling properties for the currently active data frame. The Label Manager is accessible through the Labeling toolbar.
label offset ...