The left area of the status bar describes actions of menu items and toolbar icons. The left area of the status bar will also show color or elevation of the current pixel if it's over a raster image, or the description of the closest vector overlay component. If the nearest line feature to the cursor contains recognized addressing information, the address nearest the cursor will be displayed.
Unit abbreviations are displayed in the current projection for the XY coordinates if there is no Z coordinate, or for XY and Z if the elevation coordinate unit is different. Projections that use Arc Degrees for units display as unit-less.