<s>
XEDIT	B-Application
is	O
a	O
visual	B-Application
editor	I-Application
for	O
VM/CMS	B-Application
using	O
block	O
mode	O
IBM	B-Operating_System
3270	I-Operating_System
terminals	B-General_Concept
.	O
</s>
<s>
(	O
Line-mode	O
terminals	B-General_Concept
are	O
also	O
supported	O
.	O
)	O
</s>
<s>
XEDIT	B-Application
is	O
much	O
more	O
line-oriented	O
than	O
modern	O
PC	B-Device
and	O
Unix	B-Application
editors	O
.	O
</s>
<s>
For	O
example	O
,	O
XEDIT	B-Application
supports	O
automatic	O
line	O
numbers	O
,	O
and	O
many	O
of	O
the	O
commands	O
operate	O
on	O
blocks	O
of	O
lines	O
.	O
</s>
<s>
Another	O
feature	O
is	O
a	O
command	B-Application
line	I-Application
which	O
allows	O
the	O
user	O
to	O
type	O
arbitrary	O
editor	O
commands	O
.	O
</s>
<s>
Because	O
IBM	B-Operating_System
3270	I-Operating_System
terminals	B-General_Concept
do	O
not	O
transmit	O
data	O
to	O
the	O
computer	O
until	O
certain	O
special	O
keys	O
are	O
pressed	O
[	O
such	O
as	O
,	O
a	O
program	O
function	B-Application
key	I-Application
(	O
PFK	O
)	O
,	O
or	O
a	O
program	O
access	O
key	O
(	O
PAK	O
)	O
]	O
,	O
XEDIT	B-Application
is	O
less	O
interactive	O
than	O
many	O
PC	B-Device
and	O
Unix	B-Application
editors	O
.	O
</s>
<s>
The	O
equal	O
signs	O
==	O
==	O
=	O
at	O
the	O
beginning	O
of	O
the	O
lines	O
provide	O
space	O
for	O
line	O
numbers	O
if	O
desired	O
,	O
and	O
a	O
place	O
to	O
enter	O
XEDIT	B-Application
prefix	O
commands	O
that	O
may	O
operate	O
on	O
blocks	O
of	O
lines	O
.	O
</s>
<s>
The	O
following	O
line	O
marks	O
end-of-file	O
,	O
appearing	O
in	O
XEDIT	B-Application
as	O
if	O
it	O
followed	O
the	O
last	O
actual	O
line	O
of	O
the	O
file	O
.	O
</s>
<s>
The	O
next-to-bottom	O
line	O
showing	O
==	O
==	O
>	O
is	O
a	O
command	B-Application
line	I-Application
for	O
entering	O
XEDIT	B-Application
or	O
system	O
(	O
CP/CMS	O
)	O
commands	O
or	O
macros	O
.	O
</s>
<s>
There	O
is	O
no	O
mouse	O
pointer	O
because	O
most	O
IBM	B-Operating_System
3270	I-Operating_System
terminals	B-General_Concept
did	O
not	O
have	O
mice	O
.	O
</s>
<s>
Most	O
IBM	B-Operating_System
3270	I-Operating_System
terminals	B-General_Concept
had	O
12	O
or	O
24	O
program	B-Application
function	I-Application
keys	I-Application
(	O
PFKs	O
)	O
(	O
and	O
also	O
two	O
or	O
three	O
program	O
assist	O
keys	O
)	O
,	O
to	O
which	O
XEDIT	B-Application
commands	O
or	O
macros	O
could	O
be	O
assigned	O
.	O
</s>
<s>
XEDIT	B-Application
commands	O
can	O
be	O
used	O
to	O
change	O
the	O
screen	O
appearance	O
.	O
</s>
<s>
XEDIT	B-Application
macros	O
(	O
scripts	O
)	O
can	O
be	O
written	O
in	O
Rexx	B-Language
,	O
EXEC	B-Application
2	I-Application
,	O
or	O
EXEC	B-Application
.	O
</s>
<s>
XEDIT	B-Application
exposes	O
the	O
majority	O
of	O
its	O
internal	O
state	O
to	O
the	O
macro	O
environment	O
,	O
allowing	O
macros	O
to	O
easily	O
read	O
and	O
set	O
internal	O
variables	O
that	O
control	O
its	O
operation	O
.	O
</s>
<s>
KEDIT	B-Application
5	O
for	O
DOS	B-Device
and	O
OS/2	B-Application
supports	O
an	O
external	O
Rexx	B-Language
interpreter	O
(	O
native	O
OS/2	B-Application
Rexx	B-Language
or	O
Quercus	O
Rexx	B-Language
,	O
for	O
DOS	B-Device
only	O
Quercus	O
Rexx	B-Language
replacing	O
the	O
older	O
Mansfield	O
Rexx	B-Language
)	O
and	O
its	O
own	O
rather	O
limited	O
KEXX	O
subset	O
.	O
</s>
<s>
KEDITW	O
1.6.1	O
for	O
Windows	B-Application
supports	O
only	O
its	O
own	O
internal	O
KEXX	O
5.62	O
version	O
of	O
the	O
Rexx	B-Language
language	O
.	O
</s>
<s>
XEDIT	B-Application
was	O
written	O
by	O
IBM	O
employee	O
Xavier	O
de	O
Lamberterie	O
and	O
was	O
first	O
released	O
in	O
1980	O
.	O
</s>
<s>
XEDIT	B-Application
supported	O
many	O
of	O
the	O
EDGAR	O
commands	O
,	O
SOS	O
(	O
Screen	O
Output	O
Simulation	O
)	O
being	O
a	O
major	O
one	O
.	O
</s>
<s>
XEDIT	B-Application
also	O
supported	O
EXEC	B-Application
2	I-Application
,	O
the	O
predecessor	O
of	O
Rexx	B-Language
.	O
</s>
<s>
When	O
PCs	B-Device
and	O
Unix	B-Application
computers	O
began	O
to	O
supplant	O
IBM	B-Operating_System
3270	I-Operating_System
terminals	B-General_Concept
,	O
some	O
users	O
wanted	O
text	B-Application
editors	I-Application
that	O
resembled	O
the	O
XEDIT	B-Application
they	O
were	O
accustomed	O
to	O
.	O
</s>
<s>
KEDIT	B-Application
by	O
Mansfield	O
Software	O
Group	O
,	O
Inc.	O
,	O
was	O
the	O
first	O
XEDIT	B-Application
clone	O
.	O
</s>
<s>
Although	O
originally	O
released	O
in	O
1983	O
,	O
the	O
first	O
major	O
release	O
was	O
version	O
3.53	O
for	O
DOS	B-Device
,	O
released	O
in	O
1985	O
.	O
</s>
<s>
By	O
1990	O
,	O
KEDIT	B-Application
4.0	O
had	O
a	O
version	O
supporting	O
OS/2	B-Application
,	O
and	O
included	O
the	O
ALL	O
command	O
.	O
</s>
<s>
The	O
last	O
version	O
for	O
DOS	B-Device
and	O
OS/2	B-Application
was	O
KEDIT	B-Application
5.0p4	O
.	O
</s>
<s>
KeditW	O
(	O
for	O
Windows	B-Application
)	O
is	O
at	O
version	O
1.6.1	O
dated	O
December	O
2012	O
.	O
</s>
<s>
Some	O
earlier	O
Windows	B-Application
versions	O
were	O
:	O
</s>
<s>
KEDIT	B-Application
1.6	O
supports	O
syntax	O
highlighting	O
for	O
various	O
languages	O
including	O
C#	B-Application
,	O
COBOL	B-Application
,	O
FORTRAN	B-Application
,	O
HTML	B-Language
,	O
Java	B-Language
,	O
Pascal	B-Application
,	O
and	O
xBase	B-Language
defined	O
in	O
the	O
.kld	O
file	O
format	O
.	O
</s>
<s>
KEDIT	B-Application
supports	O
a	O
built-in	O
Rexx-subset	O
called	O
KEXX	O
.	O
</s>
<s>
Mansfield	O
Software	O
created	O
the	O
first	O
non-IBM	O
implementation	O
of	O
Rexx	B-Language
(	O
Personal	B-Language
Rexx	I-Language
)	O
in	O
1985	O
.	O
</s>
<s>
In	O
December	O
2012	O
Mansfield	O
Software	O
released	O
1.6.1	O
to	O
provide	O
compatibility	O
with	O
Windows	B-Application
8	O
and	O
extended	O
support	O
to	O
at	O
least	O
June	O
.	O
</s>
<s>
These	O
32bit	O
versions	O
work	O
also	O
in	O
the	O
64bit	O
versions	O
of	O
Windows	B-Application
7	O
and	O
Vista	O
,	O
but	O
do	O
not	O
directly	O
support	O
Unicode	O
.	O
</s>
<s>
As	O
of	O
December	O
2022	O
,	O
Kedit	B-Application
supports	O
Windows	B-Application
10	O
and	O
11	O
too	O
,	O
and	O
Mansfield	O
promises	O
email	O
support	O
until	O
at	O
least	O
June	O
2024	O
.	O
</s>
<s>
SEDIT	O
(	O
first	O
released	O
in	O
1989	O
)	O
is	O
another	O
implementation	O
on	O
both	O
Windows	B-Application
and	O
Unix	B-Application
,	O
which	O
supports	O
a	O
variant	O
of	O
Rexx	B-Language
language	O
called	O
S/REXX	O
(	O
announced	O
in	O
1994	O
)	O
.	O
</s>
<s>
The	B-Language
Hessling	I-Language
Editor	I-Language
(	O
THE	O
)	O
is	O
an	O
open	O
source	O
text	B-Application
editor	I-Application
first	O
released	O
in	O
,	O
released	O
under	O
the	O
GPL-2.0-or-later	B-License
license	O
,	O
and	O
available	O
for	O
many	O
operating	O
systems	O
including	O
QNX	B-Operating_System
,	O
OS/2	B-Application
,	O
DOS	B-Device
,	O
BeOS	B-Application
,	O
Amiga	B-Device
,	O
Windows	B-Application
95/98/Me/NT/2000/XP	O
and	O
most	O
or	O
all	O
POSIX	O
Unix	B-Application
platforms	O
(	O
as	O
a	O
program	O
for	O
text-mode	O
or	O
native	O
X11	B-Operating_System
)	O
.	O
</s>
<s>
THE	O
is	O
a	O
derivation	O
of	O
the	O
IBM	O
Mainframe	O
VM/CMS	B-Application
editor	O
XEDIT	B-Application
that	O
includes	O
support	O
for	O
versions	O
of	O
the	O
REXX	B-Language
scripting	O
language	O
,	O
and	O
takes	O
some	O
features	O
from	O
KEDIT	B-Application
.	O
</s>
<s>
THE	O
was	O
written	O
in	O
C	B-Language
with	O
PDCurses	B-Device
also	O
required	O
for	O
some	O
platforms	O
.	O
</s>
<s>
A	O
REXX	B-Language
interpreter	O
such	O
as	O
Regina	B-Language
is	O
also	O
required	O
for	O
THE	O
's	O
REXX	B-Language
macro	O
capability	O
.	O
</s>
<s>
THE	O
's	O
author	O
,	O
Mark	O
Hessling	O
,	O
discussed	O
at	O
the	O
1993	O
REXX	B-Language
conference	O
in	O
La	O
Jolla	O
,	O
California	O
why	O
he	O
created	O
a	O
new	O
multi-platform	O
text	B-Application
editor	I-Application
.	O
</s>
