[GreenKeys] TYPING INSTRUCTION

[Jim Haynes]

Related to all this is the issue of keyboard layout.

It was not an issue in Baudot (Murray) code since that uses a 3 row
keyboard unique to it and uses the LTRS and FIGS codes to shift between
the two cases of characters above and below on each keytop.

It was a big issue in ASCII.  There were two proposed keyboard layouts,
called "typewriter paired" and "bit paired"  For typewriter paired the
aim was to make a keyboard as much as possible like was used on ordinary
office typewriters, so typewriter typists would not have to learn anything
different to type on terminal keyboards.  However for Teletype and other
mechanical keyboards there is a need to keep a simple relationship between
the bits for upper and lower key characters, and for the relationship to
be the same for all keys.  Because in ASCII there is no case shifting,
so the keyboard has to have a simple and consistent way to change the bits
that are emitted for upper and lower keytop symbols.  And now that we no
longer have mechanical keyboards we no longer have the problem, but the
keyboard is more or less standardized just so all people using PCs can
have the same keyboard layout.

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 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it ain't! No it ain't!  But ya gotta know the territory."
 		Meredith Willson, The Music Man