Draft it Help

 

Now we will add the two windows. Use Zoom Window zoom window button to close in on the top right hand quarter of the room.

 first window points

 

Select the Line button line button and go Relative to P1. Now using Direct Input  type -600' and  press enter key(this is the X value), now type '0' and enter key(this is the Y value). Move up and snap to the 'Perpendicular' point on the line directly above at P3.

Now select the Offset button offset button . Click on the line just drawn, drag to the left and type '1250' and press enter key, as the Offset command needs only one value the Direct Input feature of Draft it accepts this and completes the offset.

It might be a good idea to Zoom closer in around the two new lines.

Select the Line button line button again and go Relative to P4. Type '0' and enter key, now type '-40' and enter key. Move to the right and snap to the 'Perpendicular' point on the first line between P2 and P3.

Now select the Offset button offset button again. Click on the horizontal line just drawn, drag down and type '20'.

The window is complete and should appear as shown below.

 finished window