Each black 2-key
combination above is a shift function to obtain the rest of the letters
in each group, or just produces the letter marked on it when pressed
alone.
- The ABC-123 mode change toggles between
the two character sets
(black and grey)
inside the frame
shown
above.
- With SYMB, single characters can be
picked from the parallel
set,
also outside the frame. For example, colon (:) is obtained by
pressing SYMB before period (.).
- SHIFT is mainly for capitalizing but
when the character is not a letter, the effect is the same as with SYMB
by default.
Two consecutive SHIFTs set CAPS LOCK on and one more turns it off. One
SHIFT has an
effect on one character only.
The main
principle
is that for frequently used characters, only 1 to 3 simultaneous key
presses are needed but for functions more. This way typing is lighter
and functions will not be activated by mistake if typing carelessly.