Another way fbrun can be useful is to be called from the menu with a preloaded command line that you can edit and then execute. An example might be sshing to a very long host name with lots of options of which one changes all the time. In this case, you could add an entry for fbrun to your menu that contains all the options and the host name. When you use said entry, you could edit the line as necessary and execute it.

-font name

Text font name

-title name

-title name

Set title

Set title

-text text

Text input

-w width

Window width in pixels

-h height

Window height in pixels

-display name

Display name

-pos x y

Window position in pixels

-fg name

Foreground text color

-bg name

Background color

-na

Disable antialias

-hf filename

History file to load (default ~/.fluxbox/fbrun_history

-help

Show this help

The main author of fluxbox is Henrik Kinnunen <fluxgen@fluxbox.org>.