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TextFile

XGEDIT -- simple graphic editor for the X window system

XGEDIT allows one to create and edit .def compatible files.  To run type

	gedit filename

which will load filename.def for editing.  In its quiescent state XGEDIT
displays an x-shaped graphics cursor at the current position.
XGEDIT commands are single letters; the commands fall into various categories:

	graphic cursor control
	object manipulation (rotation, editing, creation, deletion)
	miscellaneous commands

Some commands prompt the user for text input.  When this happens a prompt
appears at the bottom of the screen and an underscore text
cursor is displayed.  Printing chars typed by the user will be returned
to the command for processing; in addition, certain control chars facilitate
editing of text input:

	^A	move to beginning of text line
	^B	move backward n chars (also ^H and right-arrow key)
	^C	abort input returning abort status to requestor (also ^G, ^Q)
	^D	delete n chars above and to right of cursor
	^E	move to end of text line
	^F	move forward n chars (also left-arrow key)
	^K	delete from cursor position to end of line
	^L	redisplay
	^U	n = n*4; after a command, n is reset to 1
	RUBOUT	delete n chars before cursor
	CR	editing complete, return to command (also NL, ESC)

If the cursor is somewhere in the middle of the line, printing chars
typed at the keyboard will be inserted at the current cursor position.
Some commands provide some initial text to be edited by the user --
if this default text is satisfactory, the user only need type a CR.

GRAPHIC CURSOR CONTROL

The graphic cursor is an x.  The size of the x (which can be
changed) determines the area under the cursor.  Some commands affect
objects which are under the cursor, others move the cursor to the
edge of this area (i.e., a big cursor moves faster than a small one).
The cursor will never move beyond the edge of the screen.

F, f, ^F			move graphic cursor to the right
H, h, ^H, B, b, ^B		move graphic cursor to the left
P, p, ^P			move graphic cursor up
N, n, ^N		move graphic cursor down
W, w, ^W			recenter window at current cursor position
+				make cursor twice as large
-				make cursor half as large
@				move graphic cursor to origin of picture
!				snap cursor to grid
				  (large cursor -> coarse grid)
U, u, ^U			multiplier *= 4
				  (^U^F moves 4 times as far as ^F)

OBJECT MANIPULATION

There are three types of objects: lines, labels, and subpictures (other
.def files treated as a single graphic object).

L, l, left button			start a new line at current position
a, A, ^A			specify new angle subtended by line segment
C, c				create new label (prompts for text)
I, i				insert a new subpicture (prompts for name)
S, s, ^S, right button		select object (cycles among possibilites)
Z, z, ^Z, SPACE, middle button	release selection at current position
^G				release selection, don't update old position
M, m				release selection after same relative motion
				  as previously released selection

E, e, ^E			edit selection
				 labels: edit exisiting text
				 subpics: recursive edit of source file

^				edit last

R, r, ^R			rotate, reflect selection
				 labels: changes position wrt ref. point
				 subpics: one of 8 possible rots&reflects
				 segments: if angle<>0 reflect arc about line

*				scale selected subpicture

Selected objects follow cursor motion (lines act like rubber
bands with only the selected end following the cursor) until they are
released.  


MISCELLANEOUS

^L				redisplay
X, x, ^X			change display scale (screen:def)
^C, ^Q				exit XGEDIT, updating files if top level
^O				move picture origin to cursor position
G, g				turn/on off grid points
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⟦5334c23c6⟧ TextFile

Derivation

TextFile
