grub: terminfo
16.2.4 terminfo
---------------
-- Command: terminfo [-a|-u|-v] [-g WxH] [term] [type]
Define the capabilities of your terminal by giving the name of an
entry in the terminfo database, which should correspond roughly to
a 'TERM' environment variable in Unix.
The currently available terminal types are 'vt100', 'vt100-color',
'ieee1275', and 'dumb'. If you need other terminal types, please
contact us to discuss the best way to include support for these in
GRUB.
The '-a' ('--ascii'), '-u' ('--utf8'), and '-v' ('--visual-utf8')
options control how non-ASCII text is displayed. '-a' specifies an
ASCII-only terminal; '-u' specifies logically-ordered UTF-8; and
'-v' specifies "visually-ordered UTF-8" (in other words, arranged
such that a terminal emulator without bidirectional text support
will display right-to-left text in the proper order; this is not
really proper UTF-8, but a workaround).
The '-g' ('--geometry') can be used to specify terminal geometry.
If no option or terminal type is specified, the current terminal
type is printed.