To zoom in on a map, use the Zoom toolbar button (magnifiying glass).

A small window will open within the main map window which shows what part of the map currently appears in the large window. Use the left mouse button to move the field or to stretch or compress within the small window. The display in the large window will change accordingly.

To zoom into part of the map, move the cursor into the large map window. Press the left mouse button and without releasing the mouse, draw a rectangle over the area you want to zoom in on. When the button is released, the map will redraw so that the area within the rectangle fills the window. The map can be changed only when the small General view window is still open.