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       # 2024-12-09 - Fixing The PgDn and PgUp Keys In MS-Kermit
       
       FreeDOS ships mskermit 3.16, which emulates a DEC vt320 terminal. I
       configured my getty as a vt220 terminal in /etc/inittab. When i press
       PgUp it will "roll back screen" and when i press PgDn it will
       "roll screen forward", scrolling through kermit's screen history.  I
       would rather it send control codes like xterm and other terminal
       emulators do.
       
       * * *
       
       2025-10-30 Update:
       
       To enable the End, Home, PgDn, and PgUp keys in mskermit 3.16,
       edit MSCUSTOM.INI and remove the leading semicolon to uncomment the
       following line.
       
           ;take \v(inidir)keyboard\vt300.ini ; Uncomment for full VT320
       
       I will leave the remainder of this log entry for reference.
       
       * * *
       
       At the Linux command prompt, i looked up the control codes from
       terminfo.
       
           $ infocmp -1 vt220 | grep 'k[np]p'
               knp=\E[6~,
               kpp=\E[5~,
       
       That is <Esc>[6~ for PgDn and <Esc>[5~ for PgUp.
       
       At the mskermit prompt, i looked up the keyboard scan codes according
       to kermit.
       
           [C:\FREEDOS\NET\MSKERMIT] MS-Kermit>SET KEY
            Push key to be defined: <press PgDn>
            Scan Code \4433 decimal is defined as
            Verb: dnscn  \Kdnscn
           
            Enter new definition: ...
           
           [C:\FREEDOS\NET\MSKERMIT] MS-Kermit>SET KEY
            Push key to be defined: <press PgUp>
            Scan Code \4425 decimal is defined as
            Verb: upscn  \Kupscn
           
            Enter new definition: ...
       
       That is \4433 for PgDn and \4425 for PgUp.
       
       I added the following lines to my mskermit.ini
       
           SET KEY \4433 \27[6~
           SET KEY \4425 \27[5~
       
       Now, when i connect with mskermit and press PgUp and PgDn, Linux
       applications behave as i expect them to.
       
       I can still use Ctrl+PgUp and Ctrl+PgDn to scroll through kermit's
       screen history.
       
       p.s.
       
       I also remapped the End and Home keys to vt220 control codes.
       This fixes the End and Home keys in the lynx browser.
       
       SET KEY \4431 \27[4~
       SET KEY \4423 \27[1~
       
       tags: bencollver,retrocomputing,technical,unix
       
       # Tags
       
   DIR bencollver
   DIR retrocomputing
   DIR technical
   DIR unix