To use the command prompt, first switch the input focus to it (by clicking on the command prompt with the mouse or by pressing the Shift+Esc key combination). Then enter the command you would like to run. Finally, press the Enter key (or click on the Execute button in the status bar), and the command you have entered will be passed to the program for execution.
While constructing the command to execute, you may find it useful to check the commands on the Prompt menu. This menu lets you insert various name and path components of the currently selected object into the command prompt, and thus helps you avoid unnecessary typing. For example, instead of manually typing in the name of a file in the command prompt, you may simply select the file in the panel, and press Ctrl+Ins. AB Commander will type the name of the file into the command prompt for you!
Now press Enter and the file Letter.txt should be printed out!
Instead of pressing the Ctrl+Ins keys, you can also drag the files from the panels with the mouse and drop them on the command prompt. If you drag-and-drop with the right mouse button, a menu is shown that lets you select the form of the file name or path you want to insert into the command prompt.
While entering the command into the command prompt, you can still use the Tab key to change the active panel, and also the Ctrl+Up Arrow / Ctrl+Down Arrow keys to move the current selection in the active panel.
no matter which folders are currently displayed by the panels.
Can a command be started "As Administrator" ?
Yes: press the CTRL and SHIFT keys simultaneously while pressing ENTER or clicking on the Execute button, and the command will start elevated (or "As Administrator").