...
To move short distances, click the icons on the right side of the scroller - (see blue arrow and blue box).
Click-drag to move left or right
Click-drag the selection tool (see red box below) to move in a more controlled fashion through the data. Choose the selection tool (default tool) and then click click anywhere near the edge of the image. Keep the mouse pressed and drag the cursor (arrow) to the left or right. This click-drag interaction is similar to how you can scroll up or down in many word processing programs, where you can select text and then drag the cursor up or down to scroll through the document.
...
This new feature debuted in IGB 6.5. Here, you select the grab Grab tool ("cartoon hand") and then use click it within the display. Use it to drag the display in the direction you want to move. 'hand' box.
Note: After moving to an area of interest, you will need to change back to the Selectcursor tool (arrow button to the left of theGrabbutton tool) in order to select annotations or elements within the image.
Autoscroll
This is a very useful feature for scanning large regions at medium zoom levels.
...
Resolution reflects the zoom level of the image. This can be set by hand, or just left 'as is' if you have already gone to the zoom level you prefer. Scroll increment is how far it shifts the image each time it moves; Time interval is how fast the image moves. These three elements work together to affect the speed at which you see data move past. We recommend setting the zoom level based on the image, then adjust the time or scroll until it is moving at a level comfortable for you. Megabases per minute and Total minutes for seq. will give you an idea of the final Autoscroll speed.
Note: You can designate a keyboard shortcut to activate or halt autoscrolling; go to File > Preferences > Shortcuts. Setting a shortcut key will allow you to start and stop the autoscrolling quickly and easily.