APPLICATION NOTE #145
 SETTING UNDERLINE MODE ON A COLOR MONITOR
 Rev. 02
 RELATED FILES: UNDERLN.EXE


 Color monitors work with graphics adapters in the computer to produce 
the vivid displays you see on the screen. Although there are many 
different types of graphics adapters, the most popular are referred 
to as EGA and VGA (IBM's PS/2 computer uses a VGA card). This 
application note describes a program that allows you to turn on 
underline mode if you have a color monitor and an EGA or VGA card.


 PROGRAM DESCRIPTION
 Color monitors do not automatically display an underline mode. 
Because many users expressed an interest in this feature, XYQUEST 
developed a program that allows you to turn on underlining for modes 
1 and 9, which are the default XyWrite display modes for underline 
(MD UL) and bold underline (MD BU).  This program, which is called 
UNDERLN.EXE, works on systems that have EGA and VGA cards, but does 
not work on systems that have CGA cards. UNDERLN.EXE is available on 
request; if you need a copy, just call or write to our Technical 
Support Department.


 PROGRAM OPERATION
 To use UNDERLN.EXE, copy it onto your working disk using the DOS or 
XyWrite COPY command. (If you have a hard disk, copy UNDERLN.EXE into 
the root directory.)

 To activate underlining, you must be at the DOS level. (You can use 
the XyWrite DOS command to suspend XyWrite and enter DOS.) Be sure 
the program is on the current disk or subdirectory and then type, at 
the DOS prompt:

   underln on<CR>

 Result: Display modes 1 and 9 now appear on the screen with an 
underline.

 To turn underlining off, type the following command at the DOS 
prompt:

   underln off<CR>


 Note #1  Automatic Startup. If you want underlining to be on every 
time you start up your computer,  you can add the UNDERLN ON command 
to the AUTOEXEC.BAT file on your working disk (or in the root 
directory of your hard disk). Call AUTOEXEC.BAT and enter the command 
at the top of the file (that is, before starting the XyWrite editor).

 Note #2  Changing Modes. UNDERLN.EXE only affects modes 1 and 9, 
which are the XyWrite default values for the underline (MD UL) and 
bold underline (MD BU) character displays. If you assign different 
values to MD UL or MD BU (by entering, for example, MD UL=22 in your 
printer file), UNDERLN.EXE will have no effect on the screen display 
for those modes.

 You can change the colors associated with modes 1 and 9 before 
loading  XyWrite. Refer to the documentation supplied by the graphics 
card manufacturer for information on how to do this.

 Note #3  IBM's PS/2 Computer.  Some models of this computer use VGA 
cards, which means you can use UNDERLN.EXE to display underline mode 
on your monitor. However, IBM PS/2 Model 30 uses an MGCA card, which 
is not supported by UNDERLN.EXE.