Maybe you already know, but the clipboard has it's own zooming in and out.
The defaults for zoom view is Insert and Delete. If you need to remap them, look under the keymapper/global listing. At the very bottom are "zoom map in, zoom map out".
Note: These are NOT the viewpoint zoom in and out. Those default to the bracket keys, and is turned on and off with the Z key.
It is very usefull to look for radar blips on the map that way, and to see the sector population bars with no cluter behind them.
Hans.