worknc_training_guide_cam_basic1

http://www.cadfamily.com/a/CAM_CNC_DNC/WorkNC/worknc-training-guide-cam-basic1_9754.html

You have several possibilities to zoom in and out on specific areas.
USING THE MOUSE WHEEL BUTTON
1. In the Viewing Area, click on the specific area that you want to analyze.
2. Rotate the mouse wheel button forward to zoom in.
3. Rotate the mouse wheel button backward to zoom out.
USING THE ZOOM WINDOW
1. Click on the icon.
2. In the Viewing Area, click to define the first corner of the zoom window.
3. Drag the mouse diagonally to form the zoom window.
4. Click again to define the opposite corner of the zoom window.