Zooming in

When in VC i have found the key to zoom out, the same in Spot-View. But the problem is : How to zoom in again?
Anybody know how?
Anybody know how?
Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=30&t=86615