Merging windows

How do we merge windows? The process to join the two windows is the same we use to create a division. But, instead of dragging the cursor towards the center, you will move it to the window you want to merge.

There is a simple rule you have to follow to merge two windows successfully—both of them must share the same edge. The shared side must have the same size.

Here is an example of two windows that share the same edge:

If you place the mouse cursor in one of the corners for the shared edge, you will be able to left click and drag the cursor over the window that you want to disappear. Blender will help you by showing a big arrow pointing to the direction of the expanding window, shown in the next screenshot: