[Bitmap Properties] dialog box - [Advanced] tab

[Bitmap Properties] dialog box appears when you select a bitmap annotation and then select [Properties] from the [Edit] menu.
The properties of a bitmap annotation are displayed on the [Advanced] tab. The properties cannot be modified.

[Resolution]

The resolution of the selected bitmap annotation is displayed.

[Color/Monochrome]

Indicates whether the bitmap annotation is in color or monochrome.

[No. of Colors]

The number of colors specified for the selected bitmap annotation is displayed.
 
Refer to the each linked topic for the following tabs of the [Bitmap Properties] dialog box.