keyboard

KEYBOARD(7)             Miscellaneous Information Manual             KEYBOARD(7)



NAME
       keyboard - how to type characters

DESCRIPTION
       Keyboards are idiosyncratic.  It should be obvious how to type ordinary
       ASCII characters, backspace, tab, escape, and newline.  In Plan 9, the
       key labeled Return or Enter generates a newline (0x0A); if there is a key
       labeled Line Feed, it generates a carriage return (0x0D); Plan 9 eschews
       CRLFs.  All control characters are typed in the usual way; in particular,
       control-J is a line feed and control-M a carriage return.

       The down arrow, used by and causes windows to scroll forward.  The up
       arrow scrolls backward.

       Characters in Plan 9 are runes (see Any rune can be typed using a compose
       key followed by several other keys.  The compose key is also generally
       near the lower right of the main key area: the NUM PAD key on the Gnot,
       the Alternate key on the Next, the Compose key on the SLC, the Option key
       on the Magnum, and either Alt key on the PC.  To type a single rune with
       the value specified by a given four-digit hexadecimal number, type the
       compose key, then a capital and then the four hexadecimal digits (decimal
       digits and to For a longer rune, type twice followed by five digits, or
       type three times followed by six digits.  There are shorthands for many
       characters, comprising the compose key followed by a two- or three-
       character sequence.  The full list is too long to repeat here, but is
       contained in the file in a format suitable for or To add a sequence, edit
       that file and then rebuild

       There are several rules guiding the design of the sequences, as
       illustrated by the following examples.

              A repeated symbol gives a variant of that symbol, e.g., ??  yields
              ¿.

              ASCII digraphs for mathematical operators give the corresponding
              operator, e.g., <= yields ≤.

              Two letters give the corresponding ligature, e.g., AE yields Æ.

              Mathematical and other symbols are given by abbreviations for
              their names, e.g., pg yields ¶.

              Chess pieces are given by a w or b followed by a letter for the
              piece (k for king, q for queen, r for rook, n for knight, b for
              bishop, or p for pawn), e.g., wk for a white king.

              Greek letters are given by an asterisk followed by a corresponding
              latin letter, e.g., *d yields δ.

              Cyrillic letters are given by an at sign followed by a
              corresponding latin letter or letters, e.g., @ya yields я.

              Script letters are given by a dollar sign followed by the
              corresponding regular letter, e.g., $F yields ℱ.

              A digraph of a symbol followed by a letter gives the letter with
              an accent that looks like the symbol, e.g., ,c yields ç.

              Two digits give the fraction with that numerator and denominator,
              e.g., 12 yields ½.

              The letter s followed by a character gives that character as a
              superscript, e.g., s1 yields ⁱ.  These characters are taken from
              the Unicode block 0x2070; the 1, 2, and 3 superscripts in the
              Latin-1 block are available by using a capital S instead of s.

              Sometimes a pair of characters give a symbol related to the
              superimposition of the characters, e.g., cO yields ©.

              A mnemonic letter followed by $ gives a currency symbol, e.g., l$
              yields £.

       Note the difference between ß (ss) and µ (micron) and the Greek β and μ.

   X WINDOWS
       Under X Windows, both the Alt key and the ``Multi key'' can begin a
       compose sequence in a Plan 9 program.

       It is also possible to configure X Windows to use the same keystroke
       mappings as the Plan 9 programs.  First, generate an XCompose sequence
       list by using mklatinkbd:

              mklatinkbd -x $PLAN9/lib/keyboard >$HOME/.XCompose

       Second, configure a ``Multi key'' by running

              xmodmap -e 'keysym Super_L = Multi_key'

       (The name typically denotes the Windows key on recent keyboards.)

       Third, set these environment variables so that GTK- and QT-based programs
       will use the compose sequences:

              export GTK_IM_MODULE=xim
              export QT_IM_MODULE=xim

       Finally, start a new GTK- or QT-based program:

              gnome-terminal &

       In that terminal, typing the key sequence `Windows * a' should be
       interpreted as the Greek letter

       If using the GNOME Window Manager, put the xmodmap and export commands
       into the file $HOME/.gnomerc to run them automatically at startup.

FILES
       /lib/keyboard
              sorted table of characters and keyboard sequences

SEE ALSO
                                                                     KEYBOARD(7)