Right-clicking on the Bitmap Gallery opens a pop-up menu which contains the following options:

Insert    Identical to the Insert Button.

Apply as a Fill   Identical to the Fill Button.

Apply as Transparency Identical to the Transparency Button.

Delete   Identical to the Delete Button.

Save    Identical to the Save Button.

Preview Preview the image or animation

Trace   Identical to the Trace Button.

Plug-ins   Identical to the Plug-ins Button.

Properties   Opens the bitmap properties dialog box. Click the Help button in the dialog box for more details.

Set Page Background  Sets the page background using the selected bitmap. See Changing the background.

(Un)Fold Section  Folds up or unfolds the current section.

Previous Section  Moves to the start of the previous section.

Next Section   Moves to the start of the next section.

Right-clicking on a bitmap in the gallery selects that bitmap, so opening the pop-up menu over a bitmap allows you to operate on it directly.