By placing the insertion point, you can enter your commands one at a time from this window. This is for one line commands. The command is submitted when you press Enter. The window accumulates a menu of your commands, which is recalled by pressing the down arrow button at the right end of the input window. The fx button invokes the Insert menu described in I.B. above.
Several commands are equivalent to the menu items listed earlier.
Also, in some cases, there is more than one menu item which corresponds to the particular command. The correspondences are listed below. In data editor, right button, New variable. Right mouse button when not in a window. File OPEN Output file.