Use this procedure to change the vertical orientation of windows in a wall to which the windows are anchored. 
- Select the windows you want to change, and double-click one of them. 
 
- On the Properties palette, expand Basic, and expand Location. 
 
-  Click Anchor. 
 
- Enter the X and Z rotation angles of the windows. 
 
- Indicate if you want to reverse the flip direction of the windows in the X, Y, and Z axes: 
| If you want to reverse…  | 
Then…  | 
| the direction the windows open to  | 
select Flip X.  | 
| the side of the wall the windows open to  | 
select Flip Y.  | 
| the top and bottom of the windows  | 
select Flip Z.  | 
 
  
- Click OK.