Raytheon Pathfinder ECDIS Operator's Manual page 198

Operator Manual
NOTE
Make sure to hold down the [Enter] button until the box is drawn to the
size you desire. If you have drawn the box to the desired size, but want to
reposition it, before you release the [Enter] button, hold down [Shift] and
move the cursor until the box is in the desired position. The box remains
the same size, while its position in the display changes.
Step 4 Release the trackball button when you are done.
Figure: 1−3 Zoom In per Drag an Drop after pressing the Zoom In Key
6−4
3655DOC020102 Edition: 30.MAR.2007