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T.AVL
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1989-08-14
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8KB
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197 lines
IBM Internal Use Only
********************************************************************
* *
* T - A Tiny Editor *
* *
********************************************************************
T is a text editor with a full screen interface similar to that of
Personal Editor or the E editors. However T is a tiny editor of
just under 9K bytes.
Compared to PE or E a number of things are missing from T, in
particular T only supports 'line' marking (Alt-L) and it has a
limited, though useful, set of 'command line' commands.
However T is a real editor. The size of files you may edit is
limited only by your PC's memory as are the number of files you can
edit simultaneously. T can be customised to your own colour and
keyboard choices using a customiser program. T can fully support
displays with any number of rows and columns.
Typically T might be useful for editing very large files, for
editing on machines with little memory, or for using from within
programs such as FILEMAN or dBASE III.
Two versions of T are included in the package: T.EXE for PC/DOS and
T2.EXE for OS/2.
The package contains the following files:
T AVAIL - the availability notice, this file.
T EXEBIN - the PC/DOS version of the editor.
T2 EXEBIN - the OS/2 version of the editor.
TKEY EXEBIN - the customiser program.
TKEYS DEF - a sample custom definition file.
THELP HLPBIN - a help file.
T SCRIPT - the documentation.
There is a T FORUM on IBMPC for comments, discussion etc. about
this editor.
Tim Baldwin
IBM UK Software Technology
Sheridan House
Winchester
UK
BALDWINT at WINVMB
-------------------------------------------------------------------
Version 1.22a - 14th August 1989
This version has a minor change to T2 which will enable it to make
use of non-'eight-dot-three' filenames allowed with the HPFS
of OS/2 1.2.
Only T2.EXE has changed.
-------------------------------------------------------------------
Version 1.22 - 10th July 1989
Two bugs fixed in T and T2:
- If SET FINAL EOF = OFF is specified and an empty file is saved
a correct zero length file will be written, not 4096 bytes of
garbage.
- A CHANGE command specified as 'C /target' will correctly replace
'target' with nothing, rather than with garbage.
The default settings for S-F1, S-F2, S-F3, S-F4 and SPILL FILE have
been corrected in TKEY.
The help file THELP.HLP has been replaced with a new, improved
version.
T.EXE, T2.EXE, TKEY.EXE and THELP.HLP have changed.
-------------------------------------------------------------------
Version 1.21 - 31st May 1989
Two bugs fixed:
- Very long lines (253 to 255 characters) will be correctly
saved.
- Will run under MS-DOS.
Only T.EXE and T2.EXE are changed.
-------------------------------------------------------------------
Version 1.20 - 16th May 1989
This version of T has a number of significant changes and
enhancements:
New Commands:
------------
- PRINT <device> Prints the current file to the specified device.
If no device is given, it defaults to PRN.
- MARGIN nn Sets the right hand margin to column nn. Enter
a value of zero to set no right hand margin.
See "Word Processing Features" below for more
details,
New Functions:
-------------
- MARK LEFT Default key Alt-F7. This shifts the marked
lines one character to the left.
- MARK RIGHT Default key Alt-F8. This shifts the marked
lines one character to the right.
- ADJUST LINE Default key Alt-A. This command will adjust the
current line to the right margin.
See "Word Processing Features" below for more
details,
- SAFE FILE Default key F4. This will perform a FILE if the
document has been changed, otherwise it will
perform a QUIT.
Changed Functions:
-----------------
- SAVE and related commands (FILE and SAFE FILE) are
now very much faster.
- SPLIT LINE respects the setting of AUTO INDENT. If this is
set ON the split line will be aligned under the
first column of the line above it.
Other Changes:
-------------
- The status line now shows the current margin column (if one has
been set) in the form 'M nn', to the right of the column number.
- The default action for unused Ctrl- keys is now NOTHING. To get
the previous T action add these commands to your custom
definition file:
KEY C-A = ASCII 1
KEY C-B = ASCII 2
...
KEY C-Z = ASCII 26
- There is a new TKEY setting:
SET MARGIN = OFF
or SET MARGIN = nn
this sets an initial right margin. The default is OFF.
- T2.EXE and TKEY.EXE are both supplied as WINDOWCOMPATible
programs ready to run in a PM windowed session.
- SET SNOW REMOVAL = AUTOMATIC will detect when running on a PCJr
and suppress the screen snow removing code.
- TKEY will accept any character (from ASCII 0 to ASCII 255) in
a .DEF file. Previously a hex 1A would have been taken as
end-of-file.
- TKEY will treat all characters from a // to the end of the
line as a comment.
Word Processing Features:
------------------------
The new command MARGIN and the new keyboard function ADJUST LINE now
give T some limited word processing features. The MARGIN command
sets a right hand margin. As text is typed across this margin words
will be word-wrapped onto a new blank line, meaning paragraphs can
easily be entered without having to hit the Enter key.
When AUTO INDENT is ON (the default) words that are wrapped are
aligned under the first non-blank of the previous line, making it
simple to leave a left margin or to enter sections of text indented.
The word wrapping is not perfect, particularly when corrections are
made to a paragraph. After a number of additions and deletions the
whole paragraph can end up looking a bit of a mess. The ADJUST LINE
function (Alt-A) is designed to sort this out. ADJUST LINE will
reflow the current line to the right margin, by splitting it if it
is too long or filling it with words from the following line if it
is too short. When it's split the split-off piece aligns under the
first non-blanks of the previous line and the cursor moves down to
the split-off line. This plus the fact that blank lines are ignored
makes reflowing a paragraph very easy: just put the cursor on the
first line and keep pressing Alt-A until the job is done.