Panorama
Pan, Panning, Panorama
You can reach this mode...
by [p] or
by "Panorama (Pan)" in menu "View" or
by the tool 
under the icon 
What you can do...
The point clicked next with M1 will be moved to the center of the screen, the scale remains the same. This function can also directly be started with [p]. It is useful e.g. when drawing signals, if the aimed point is not on the visible screen any more. Move the mouse to the border of the screen and press [p] to advance the paper. Pressing [p] does not leave the draw signals mode.
Leave this mode... by [ESC] or M12
Tip: You can also use [Ctrl] + M2H to pan the window!