<> = Chord Chart = Since I spend most of my time in a text terminal, I put together a chord chart for the !SpiffChorder which fits safely into a standard 80x24 character screen. I made it 78x22 characters in size to allow for a one-character border on all sides. {{{ +----------+---F-N-CN+ +----------+---F-N-CN+ +----------+------F>CF----+ | -RMI -C- | a A + | | PR-- --- | u U "" | | PRMI N-- | numl | | P--I --- | b B \ | | | PR-- -C- | v V ] } | | PRMI NC- | kpl | | --M- -C- | c C 7 & | | P--- --- | w W 5 % | | P--- --F | ret kp ret | | --MI --- | d D / ? | | P--I -C- | x X & | | ---- --F | lshf kp + | | -RMI --- | e E = + | | -R-- --- | y Y 4 $ | | PRMI --F | caps kp ins | | P--- -C- | f F 9 ( | | PR-I --- | z Z ` ~ | | -R-I --F | tab kp - | | -R-- -C- | g G 8 * | | ---- -C- | spc 1 ! | | --M- --F | bksp kp beg | | -RM- --- | h H 00 | | PR-- N-- | ; : | | -RM- --F | del kp del | | ---I --- | i I 2 @ | | --M- N-- | , < | | P-MI --F | sclk kp / | | -R-I -C- | j J () | | -RM- N-- | . > | | P-M- --F | ptsc kp * | | -R-I --- | k K $ | | -RMI N-- | ' " | | -R-- --F | rght kp rght | | ---I -C- | l L 6 ^ | +----------+-----N---+ | PR-- --F | down kp down | | --MI -C- | m M * | | -R-- N-- | esc | | PRM- --F | pgdn kp pgdn | | PRM- -C- | n N [ { | | PRM- N-- | lal ral | | ---I --F | left kp left | | PRMI -C- | o O 0 ) | | P--I N-- | ins | | --MI --F | up kp up | | -RM- -C- | p P % | | PR-I N-- | lct rct | | -RMI --F | pgup kp pgup | | PR-I -C- | q Q ? | | P--- N-- | fnc | | PR-I --F | home kp home | | --M- --- | r R 3 # | | --MI -C- | f10 | | P--I --F | end kp end | | PRM- --- | s S - _ | | -RM- -C- | f11 | | ---- N-F | brk | | PRMI --- | t T 000 | | PR-- -C- | f12 | | ---- NCF | rst | +----------+---------+ +----------+---------+ +----------+--------------+ }}} = keynav Configuration = I use the [[http://www.semicomplete.com/projects/keynav/|keynav]] utility to emulate a mouse pointer. The default keysym binding it uses is inefficient with the !SpiffChorder, so this .keynavrc file will change it to use the cursor movement chords for cutting/moving selection regions, single-finger keypresses for emulated button clicks and two-finger chords for dragging clicks. {{{ clear daemonize ctrl+semicolon start Escape end Left cut-left Down cut-down Up cut-up Right cut-right Home move-left Page_Down move-down Page_Up move-up End move-right space warp,click 1,end semicolon warp,end period warp i warp,click 1,end r warp,click 2,end y warp,click 3,end d warp,drag 1 h warp,drag 2 u warp,drag 3 }}} = The Modified NASA Set = The default chordset of the !SpiffChorder is referred to as the [[http://chorder.cs.vassar.edu/spiffchorder/modified_nasa|Modified NASA keybindings]] in its source code and documentation. This set appears to be based on one developed for Infogrip's ''BAT Personal Keyboard'' in the mid-1980s (a joint project with the United States National Aeronautics and Space Administration). [[http://patentscope.wipo.int/search/en/WO1993000629|The patent for their CHORDIC KEYBOARD SYSTEM]] was filed with the US Patent Office in 1992, but it has since [[http://en.wikipedia.org/wiki/Term_of_patent_in_the_United_States|expired]] and is currently in the public domain. According to the patent application, ''the most frequently used primary symbols are mapped into the chords which are the easiest and most efficient to use.'' (For those who are interested, it goes into much greater detail on the testing methodology and analysis used to determine this correlation.) = The Alpha-Dot Set = [[http://chorder.cs.vassar.edu/spiffchorder/modified_nasa/forside|Greg Priest-Dorman proposes that Infogrip's chords could be based on the Alpha-dot keyboard]] used by the US military in the 1970s, but seems to still be looking for confirmation from someone with access to the relevant documentation. ---- [[../|back to The Man-Machine...]]