R CHANGES UNDER CONSIDERATION (30 Jan 1978)

-- changes made ---

leading ^C, ^R causes break
don't remove trailing blanks in nofill mode
FS changes both c and p fonts
PF request removed
TR takes 2 characters only
WF and WA can take a full file name (if one name given then
	taken as extension)
HV, VV requests
^F ring buffer (also used by FS)
FONT, PFONT NR do not affect ring buffer
Fwidth NR
End_of_sentence NR

-- likely changes --

Allow arb. space/tab to separate file name from font mode
Should the no-space mode be reset when the vertical position is
	changed? (YES)
.ms <macro-name> <sr-name>			macro -> string
CFDATE, CFTIME string registers
Does ^X macro start in state=0?  Should it?

LESS LIKELY CHANGES

Concealed newlines?
Outfile SR/SR init?
case shift request?
Better way to handle tabs.
Allow underlining of white space (internal prefix operator).
A way to avoid widows?
RD arg should always go to tty (error file on UNIX?)
Should .nr font x interfere with ^F* (by changing old font)?
	At least document it.
There apparently is some use for a "left-justify" character, other
	than the hpos hack, which perhaps should change.
Could use a "relative tab" that does not break words or affect justification.
	Perhaps simply change semantics of .hp to always be
	relative (thus allow negative hpos until actually used).
\^A"0 "doubles" quotes before inserting
Should allow more than 10 macro arguments?
Think about beginning-of-line and end-of-line traps (for line numbering
	and large character hacks)
Perhaps the ES request should not copy the partial line.
Recognize hyphen at end of input line in fill mode (?)
Invisible hyphen character ^Y (?)
LPT_TABs: if (n=lpt_tabs)>0 then assume that LPT has tab stops every
	n columns and use tabs for input tabs, ^Ps, etc.
Should " matching only occur at one input level?  How difficult to
	implement?

Possible uses for remaining control characters:
	^O - horizontal offset
	^Y - hYphen

R BUGS

R MACRO BUGS

R MACROS

R MACRO DOCUMENTATION

R MANUAL

Ignore would be a good example.
Should talk about using fixed-width fonts to get things
	lined up as in input (pf and tabs).
Explain how character width is calculated, and what it means.
	space_width = width (' ')
	char_width = max (width (' '), min (2*width(' '), width ('0')))
Note that skipping statement bodies knows nothing about
	macro definitions.
EQ needs example.
Note that .\^Sfoo is possible.