Whenever a command is submitted through the entry box, it goes into a stack of previous commands. Using the UP/DOWN arrow keys can cycle through these previous commands, and hitting ENTER on one of them will re-submit that command.
Input will always go to whichever mud is active, meaning whichever mud has the active/green tab color.
Special Keys
You can press ALT key and the first letter of an option to open that menu.
Open windows can be navigated with the arrow keys, and the first
letter of a menu option pressed to select that option.
When dialogs are open, the TAB key can be used to navigate fields,
and the ESCape key to close an open dialog.