Sometimes, after scanning in paper plans, the page will be off the horizontal axis slightly and images will look crooked on the Image Tab. To fix this use the Deskew function.
To deskew an image,
from the Image menu, select
Deskew. The Deskew Image dialog
will appear, which has directions for deskewing the image.
Find a known horizontal line on your drawing. The longer this horizontal line is, the better.
Click on the line and drag to trace over it from left to right. The line you draw will be red.
The program will attempt to rotate the drawing level to this line.
It's best to find the longest known horizontal line possible. The longer the reference point, the better On-Screen Takeoff can straighten the display.
Deskewing an image does not actually edit the image file - it only changes how On-Screen Takeoff displays the image.