/LMAR=0/XLINE=3/FONT#0=BDR40/FONT#1=BDR66/FONT#2=FIX40



␈↓ α∧␈↓␈↓ εifoo



␈↓ α∧␈↓␈↓ ¬πDocument Representation in
␈↓ α∧␈↓␈↓ ∧PComputer Communication Systems

␈↓ α∧␈↓Where we are going.
␈↓ α∧␈↓    Computer mail, news, publications, ...


␈↓ α∧␈↓↓Where we are.
␈↓ α∧␈↓    Prototype networks, irregular character sets, no graphics.


␈↓ α∧␈↓↓What do we need?
␈↓ α∧␈↓    a.  A universal symbol set,

␈↓ α∧␈↓    b.  A graphical communication language.

␈↓ α∧␈↓    c.  Graphical compilers (medium specific)



␈↓ α∧␈↓↓␈↓ ∧3A 16 bit Standard Code


␈↓ α∧␈↓αCode: '0                 IG         LG
␈↓ α∧␈↓α     International standard  ad hoc   Local
␈↓ α∧␈↓α        graphics symbols      grfx    grfx



␈↓ α∧␈↓α |       LC         IC      '177777
␈↓ α∧␈↓α | Local    ad hoc     International
␈↓ α∧␈↓α | control  control      control



␈↓ α∧␈↓↓␈↓ ∧#Communication Protocol


␈↓ α∧␈↓↓Header:


␈↓ α∧␈↓α# of bits:      16             16           16
␈↓ α∧␈↓αField:     message type   # of symbols   byte size


␈↓ α∧␈↓↓Code pairs:

␈↓ α∧␈↓α# of bits:       16         (specified in header)
␈↓ α∧␈↓αField:      standard code    transmission code



␈↓ α∧␈↓↓␈↓ ¬	PUB FEATURES


␈↓ α∧␈↓ALGOL-like syntax

␈↓ α∧␈↓Multiple device output

␈↓ α∧␈↓Format control (headings, footnotes, columns, justification)

␈↓ α∧␈↓Font selection

␈↓ α∧␈↓Macros

␈↓ α∧␈↓Counters

␈↓ α∧␈↓Symbolic cross-references

␈↓ α∧␈↓Automatic table of contents, sorted index

␈↓ α∧␈↓Interactive debugging

␈↓ α∧␈↓(Extension) line drawings