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+.TH APL 1 8/26/80
+.UC 4
+.SH NAME
+apl \- an apl interpreter
+.SH SYNOPSIS
+.B apl
+.SH DESCRIPTION
+.I Apl
+is an APL interpreter.
+All of the operators are exactly as in apl\e360.
+Overstrikes are often
+required, and they work (use ctrl-h).
+.PP
+Function definition is not what you would expect.  Functions are loaded
+from files.  The first line of the file is the function header, as you
+would expect it but with no del.  The rest of the file is the lines
+of the function.  Lines are numbered, but there are no
+square brackets with line numbers.  If you say
+)READ FILE it will load the function
+in that file.  If you say )EX FILE it will put you in the
+editor to change that file.  Upon exit, it will read the file in
+as though by )READ.
+.PP
+All of the usual operators are available, including domino.
+Also available are monadic encode and epsilon.
+.LP
+The following
+.I apl
+system commands are available.
+.TP
+)ASCII
+.br
+changes terminal to accept and print ASCII characters and operators;
+this is the default.
+If you are stuck in APL mode on an ASCII terminal, `"' is `)' and
+lowercase letters map to uppercase.
+.TP
+)APL
+.br
+changes terminal to accept and print APL characters.  Erase is set to 
+\(*W and kill is set to \(*a.
+.TP
+)DIGITS n
+.br
+sets the number of digits displayed to n, from 1 to 19.
+.TP
+)FUZZ n
+.br
+sets the fuzz to n.
+.TP
+)ORIGIN n
+.br
+sets the origin to n, which should be 1 or 0.
+.TP
+)WIDTH n
+.br
+sets 
+.IR apl \&'s
+idea of your terminal's carriage width.
+.TP
+)ERASE n
+.br
+gets rid of function or variable named n.
+.TP
+)SAVE n
+.br
+saves all variables and functions (workspace) in file named n.
+Workspaces are sensitive to changes in
+.I apl.
+.TP
+)LOAD n
+.br
+gets the workspace in file n (which must have been 
+)SAVE'd.)
+.TP
+)COPY n
+.br
+like )LOAD but variables and functions are not erased.  Things
+in the loaded file take precedence over stuff already in.
+.TP
+)CLEAR
+.br
+clears the workspace.
+.TP
+)DROP n
+.br
+deletes file n in your directory, which need not be saved from
+.I apl.
+.TP
+)CONTINUE
+.br
+exits and saves workspace in file
+.I continue
+which is loaded next time you run
+.I apl.
+.TP
+)OFF
+.br
+exits
+.I apl.
+.TP
+)READ n
+.br
+reads in a function from file \fIn\fR.  The first line is the header,
+with no del's.  The full APL\360 header is accepted.  All other
+lines in the file are lines in the function.  Lines are implicitly numbered,
+and transfers are as usual.  There are no labels.
+.TP
+)EDIT n
+.br
+runs the editor
+.IR ed (1)
+on file \fIn\fR, and then )READ's the file when you leave the editor.
+.TP
+)EX n
+.br
+runs the editor
+.IR ex (1)
+on file \fIn\fR, and then )READ's the file when
+you leave the editor.
+.TP
+)VI n
+.br
+runs the editor
+.IR vi (1)
+on file \fIn\fR, and then )READ's the file when
+you leave the editor.
+.TP
+)LIB
+.br
+lists out all of the files in the current directory.
+.TP
+)FNS
+.br
+lists out all current functions.
+.TP
+)VARS
+.br
+lists out all current variables.
+.TP
+)DEBUG
+.br
+toggles a debugging switch, which can produce vast amounts
+of hopelessly cryptic output.
+.SH FILES
+apl_ws \- temporary workspace file
+.br
+continue \- continue workspace
+.SH AUTHORS
+Ken Thompson, Ross Harvey, Douglas Lanam
+.SH BUGS
+This program has not been extensively used or tested.
+.bp
+.SH ASCII CHAR MNEMONICS
+.nf
+.ta 0.5i 1.0i 3.0i 3.5i 4.0i
+
+  &	\(*L	and 	#	\(mu	times
+  \-	\-	minus	+	\(pl	add
+  <	<	less than	>	>	greater than
+  =	=	equal to	,	,	comma
+  %	\(di	divide	*	*	exponential (power)
+  !	!	factorial and combinations	?	?	deal
+ .le	\(<=	less than or equal	.ge	\(>=	greater than or equal
+ .ne	\(!=	not equal	.om	\(*W	omega (not used)
+ .ep	\(*e	epsilon	.rh	\(*r	shape (rho)
+ .nt	\(no	not (also \'~\')	.tk	\(ua	take (also \'^\')
+ .dr	\(da	drop	.it	\(*i	iota	
+ .ci	\(ci	circular function	.al	\(*a	alpha (not used)
+ .cl	\(lc	maximum (ceiling)	.fl	\(lf	minimum (floor)
+ .dl	\(*D	del (not used)	.de	\(gr	upside down del
+ .jt	\(de	small circle (null)	.qd	\(sq	quad
+ .ss	\(sb	right U (not used)	.sc	\(sp	left U (not used)
+ .si	\(ca	Down U	.su	\(cu	U (not used)
+ .[^	\(gr	upside-down del	.bv	\o'\(lf\(rf'	decode (base)
+ .rp	\o'\(lc\(rc'	encode (rep)	.br	\(or	residue (mod)
+ .sp	\(<-	assignment (also '_')	.go	\(->	goto
+ .or	V	or	.nn	\o'\(*L~'	nand
+ .nr	\o'v~'	nor	.lg	\o'*\(ci'	log
+ .rv	\o'\(ci\(or'	reversal	.tr	\o'\(ci\e'	transpose
+ .rb		reverse bar	.cb	\o',-'	comma bar ( not used)
+ .sb	\o'/-'	slash bar	.bb	\o'\e-'	blackslash bar
+ .gu	\o'\(*D\(or'	grade up	.gd	\o'\(gr\(or'	grade down
+ .qq	\o'\(sq\(fm'	quote quad	.dm	\o'\(sq:'	domino
+ .lm	\o'\(ca\(de'	lamp	.ib	\o'\(rc\(lc\(lf\(rf'	I-beam
+ .ex		execute (not used)	.fr		format(not used)
+ .di		diamond (not used)	.ot		out (not used)
+ .ld	\o'\(*D~'	locked del (not used)	._a	A	alias for \'A\'
+ ._b	B	alias for \'B\'	._c	C	alias for \'C\'
+ ._d	D	alias for \'D\'	._e	E	alias for \'E\'
+ ._f	F	alias for \'F\'	._g	G	alias for \'G\'
+ ._h	H	alias for \'H\'	._i	I	alias for \'I\'
+ ._j	J	alias for \'J\'	._k	K	alias for \'K\'
+ ._l	L	alias for \'L\'	._m	M	alias for \'M\'
+ ._n	N	alias for \'N\'	._o	O	alias for \'O\'
+ ._p	P	alias for \'P\'	._q	Q	alias for \'Q\'
+ ._r	R	alias for \'R\'	._s	S	alias for \'S\'
+ ._t	T	alias for \'T\'	._u	U	alias for \'U\'
+ ._v	V	alias for \'V\'	._w	W	alias for \'W\'
+ ._x	X	alias for \'X\'	._y	Y	alias for \'Y\'
+ ._z	Z	alias for \'Z\'
+.fi