Dolly or track within the UV Texture Editor

To...	Do this
Change the view of the UVs.	Use the camera move keys: + to track + to dolly in and out
Zoom in/out to show all UVs.	In the UV Texture Editor, choose View > Frame All.
Zoom in/out to show the selected UVs.	In the UV Texture Editor, choose View > Frame Selection.
Make texture borders look thicker.	In the UV Texture Editor, click the Toggle Texture Borders button.