Pressing one of the '[]' keys starts the corresponding action, in some
cases follows another menu.

For downloading files will be selected by pressing its corresponding key,
a '*' will show selection. If a selected file is selected again, it will be
unselected a.s.o.
Files will be transferred by Z-Modem.

Some things will be shown in a pager, recognizable by its highligted line on
the bottom, showing all keys to page. By pressing 'Q' or somcases 'Return'
quits pager and starts the action selection was for. Pressing 'Esc' quits
also but do not start action.

Program messages are shown in a popup-window.

There is no way to abort down-/uploads, in case wait for timeout.

(press 'Q')
