The Window menu contains the following commands:

Cascade

Rearranges all open files so they overlap in a cascade. The title bar and a portion of each window are visible.

Tile Horizontal

Arranges all open files within the document pane from top to bottom.

Tile Vertical

Arranges all open files within the document pane from left to right.

Split

Allows you to split the current file horizontally into two equal parts.

Remove Split

If the current file is already split, it allows you to remove split.

Filename

Lists the currently open files in the document pane.