Joe commands grouped by function

Background programs
-------------------
bknd		Run a shell in a window
killproc	Kill program in current window
run		Run a UNIX command in a window
sys		Run a UNIX command and return to editor when done (I/O does
		not go through editor, be we get the command's return status).

Blocks
------
blkcpy		Copy marked block to cursor
blkdel		Delete marked block
blkmove		Move marked block to cursor
blksave		Save marked block into a file
copy		Copy block to kill-ring
drop		Set markb.  If it was already set, eliminate it.
dropon          Set markb.  If it was already set, eliminate it.  Turn on marking mode.

toggle_marking	If we're in a block: clear markb and markk.
		If marking is off: set markb and turn on marking.
		If marking is on: set markk (swap if necessary with markb)
		and turn marking off.

begin_marking	If we're on an edge of a block: set markb to other edge and
		turn on marking mode.  Otherwise set markb to cursor and
		turn on marking mode.

select          Set markb.  If it was already set, do nothing.
filt		Filter block or file through a unix command
markb		Set beginning of block mark
markk		Set end of block mark
markl		Mark current line
nmark		Eliminate markb and markk
picokill	Delete line or block
pop		Restore markb and markk values from stack
psh		Push markb and markk values onto a stack
swap		Switch cursor with markb
tomarkb		Move cursor to markb
tomarkbk	Move cursor to markb or markk
tomarkk		Move cursor to markk
yank		Insert top of kill ring
yankpop		Scroll through kill ring
yapp		Append next kill to top of kill ring
upper		Convert everything in block to uppercase
lower		Convert everything in block to lowercase

Buffers
-------
bufed		Buffer menu
edit		Load file into window: asks to reload if buffer exists
switch		Load file into window: always uses buffer if it exists
scratch		Load a scratch buffer into current window
nbuf		Load next buffer into current window
pbuf		Load previous buffer into current window

Cursor Motion
-------------
bof		Move cursor to beginning of file
bol		Move cursor to beginning of line (always)
bop		Move to beginning of a paragraph
bos		Move to beginning of screen
bkwdc		Search backwards for a character
byte		Move cursor to specific byte offset into the file.
col		Move cursor to specific column number.
dnarw		Move cursor down one line
eof		Move cursor to end of file
eol		Move cursor to end of line
eop		Move cursor to end of paragraph
fwrdc		Search forward for matching character
gomark		Move cursor to a bookmark
home		Move cursor to beginning of line
line		Move cursor to specified line
ltarw		Move cursor left
nedge		Move cursor to next edge
nextpos		Move cursor to next position in cursor position history
nextword	Move cursor to end of next word
pedge		Move cursor to previous edge
prevpos		Move cursor to previous position in cursor position history
prevword	Move cursor to beginning of previous word
rtarw		Move cursor right
setmark		Set a bookmark
tomatch		Move cursor to matching delimiter
tos		Move cursor to top of screen
uparw		Move cursor up

Deletion
--------
backs		Backspace
backw		Backspace a word
delbol		Delete to beginning of line
delch		Delete character under cursor
deleol		Delete to end of line
dellin		Delete entire line
delw		Delete word to right

Error parsing
-------------
nxterr		Goto next parsed error
parserr		Parse errors in current file
prverr		Go to previous parsed error
showerr		Show current message

Exit
----
cancel		Like abort, but doesn't return failure: useful in macros
		to escape out of a prompt.

abort		Abort current buffer/window.  Prompt if it is changed.

abortbuf	Like above, but just fail if it would have to prompt because
		it's the last window on a modified buffer.

ask		Prompt to save current file: user says yes return, user says
		no: run 'abort'.  Use in a macro: "ask,query,exsave"

exsave		Save file and exit

lose		emacs kill buffer.  The buffer is deleted- any windows with
		it get a replacement scratch buffer.

querysave	Prompt to save each modified buffer
		Use in a macro: "querysave,query,killjoe"

killjoe		Exit joe immediately without checking for modified buffers

Files
-----
save		Save file
savenow		Save immediately, unless file name is not known
insf		Insert a file

Formatting
----------
center		Center line
fmtblk		Format all paragraphs in a block
format		Format current paragraph
lindent		Indent to the left
rindent		Indent to the right

Help
----
help		Turn help on or off
hnext		Switch to next help screen
hprev		Switch to previous help screen

Inserting
---------
ctrl		Type next key
finish		Complete word in text window
insc		Insert a space 
open		Insert newline
quote		Insert a control character
quote8		Insert a meta character
rtn		Return key
type		Insert typed character

Macros
------
macros		Insert keyboard macros into current file
play		Execute a macro
query		Macro query
record		Record a macro
stop		Stop recording macro

Menu
----
backsmenu	Undo in file completion menu
bofmenu		Move to beginning of menu
bolmenu		Move to beginning of line in a menu
dnarwmenu	Move down one line in a menu
eolmenu		Move cursor to end of line in a menu
eofmenu		Move cursor to end of menu
ltarwmenu	Move cursor left in a menu
rtarwmenu	Move cursor right in menu
uparwmenu	Move cursor up in menu
dnslidemenu	Scroll menu down one line
upslidemenu	Scroll menu up one line
pgupmenu	Scroll menu up
pgdnmenu	Scroll menu down

Misc
----
beep		Beep
execmd		Execute a joe command
math		Calculator
mode		Mode prompt
msg		Display a message
notmod		Clear the modified flag
retype		Refresh screen
shell		Suspend process or execute a sub-shell
stat		Display cursor position
tag		Tags file search
txt		Insert text.  If first character of entered text, then the rest
		of the text is treated as if it were a status line
		definition string, like -lmsg and -rmsg.
name		Insert current file name
language	Insert current language
charset		Insert current character set
keymap		Switch to another keymap

Prompts
-------
complete	Complete a file-name in a prompt
if		Only run following cmds if expr is true (non-zero)
then		Same as rtn but only works in prompt windows
elsif		Try a new condition
else		Toggle truth flag
endif		Start running cmds again

Here is an example 'if' macro:

if,"char==65",then,"it's an A",else,"it's not an A",endif	^[ q

When you hit ^[ q, if the character under the cursor is an 'A': "it's a A"
is inserted into the buffer, otherwise "it's not an A" is inserted.

"if" creates a math prompt (like ESC m).  "then" is like "rtn"- it hits the
return key for this prompt.

Within the math prompt, the following variables are available:
	char	ASCII value of character under cursor
	width	Width of screen
	height	Height of screen
	byte	byte number
	col	column number
	line	line number
	lines	no. lines in file
	top	line number of top line of window

Repeat
------
arg		Prompt for repeat argument
uarg		Universal argument

Scrolling
---------
crawll		Pan screen left
crawlr		Pan screen right
dnslide		Scroll screen down 1 line
pgdn		Scroll screen down
pgup		Scroll screen up
upslide		Scroll up one line

Search and replace
------------------
ffirst		Find text
fnext		Repeat previous search
isrch		Incremental search forward
qrepl		Search and replace
rfirst		Search backwards for text
rsrch		Reverse incremental search

Windows
-------
explode		Display one window or display all windows
dupw		Duplicate current window
groww		Increase size of window
nextw		Move cursor to next window
prevw		Go to previous window
shrinkw		Shrink window
splitw		Split window into two
tw0		Eliminate this window
tw1		Show only one window
mwind		Get error messages window on the screen and put cursor in it.
mfit		Fit two windows on the screen: make current window 6 lines,
		and give rest of space to window above.  The window above is
		either the existing previous window, a newly created one if
		there wasn't one.

Undo
----
redo		Re-execute the latest undone change
undo		Undo last change

Mouse
-----
tomouse		Move the cursor to where the mouse was clicked/dragged
defmdown	Default single-click handlers
defmdrag	(click to move cursor, drag to select characters)
defmup
defm2down	Default double-click handlers
defm2drag	(drag to select words)
defm2up
defm3down	Default triple-click handlers
defm3drag	(drag to select lines)
defm3up
paste		Insert text until magic sequence ^[ [ 2 0 1 ~ is received.
		(for XTerm bracketed paste).

Math
----
Math functions:
	sin, cos, tan, exp, sqrt, cbrt, ln, log,
	asin, acos, atan, sinh, cosh, tanh, asinh, acosh,
	atanh, int, floor, ceil, abs, erf, erfc, j0,
	j1, y0, y1

Variables:
	e	Set to 'e'
	pi	Set to 'pi'
	top	Set to line number of top window line
	lines	Set to number of lines in file
	line	Set to current line number
	col	Set to current column number
	byte	Set to current byte number
	size	Set to buffer size
	height	Set to window height
	width	Set to window width
	char	Set to ASCII val of character under cursor	
	markv	True if there is a valid block set (^KB ... ^KK)
	rdonly	True if file is read-only
	arg	Current repeat argument
	argset	True if a repeat argument was given
	no_windows No. buffer windows on the screen
	ans	Result of previous expression

Commands:
	hex	Hex display mode
	dec	Decimal display mode
	ins	Insert 'ans' into buffer
	sum	Sum of numbers in block
	cnt	Count numbers in block
	avg	Average value of numbers in block
	dev	Standard deviation of numbers in block
	eval	Evaluate math expressions in block (or whole file
		if no block set).
	joe(..)	Execute a JOE macro (argument in same format
		as joerc file macros).  Return value of
		JOE macro is returned (for macro success,
		return true (non-zero)).

		For example:

			joe(sys,"[ 1 == 1 ]",rtn)

		([ 1 == 1 ]) is a shell command.  "[" is a synonym for
		the "test" UNIX command.

		Returns true.

		Remember: argument for JOE macro command
		"if" is a math expression.  So for example, the
		macro:

		if,"joe(sys,\"[ 1 == 1 ]\",rtn)",then,"TRUE",endif

		Types TRUE into the buffer.

Operators:
	
	^  * / %  + -  < <= > >= == !=  &&  ||  ? :  =  :

	&&, || and ? : work as in C and sh as far as side effects: if the
	left side of && is false, the right side is not evaluated.

	: is expression separator
