TRGdos is very similar to the good old' COMMAND.COM.
It's not only used for CF file operations - it's a DOS environment were TRGdos applications and batch files can be launched.

TRGdos has the following features:

• True DOS commands: CLS, DIR, REN, MD, RD, CD, TYPE, ECHO, PAUSE, VER, COPY, DEL, ...
• Minimal support for simple batch (.BAT) files, including AUTOEXEC.BAT.
• Support for TRGdos applications (A TRGdos utility is included in the ZIP file as a sample).
• DOS application library freely available to developers for developing DOS applications for TRGdos.
• Launches native Palm apps and TRGdos applications with command-line parameters from the command prompt.
• No need of unique PalmOS registration IDs: All DOS applications use the same ID and operate under TRGdos.
• TRGdos applications are of small size, since there's no graphical user interface overhead.
• DOS command-line parameter and batch-control power.
• Scrollable 40x25 output console.
• Easy to port existing DOS (text) applications to TRGdos: The TRGdos programmer's library is using standard STDIO functions: printf(), gets(), getch(), open(), close(), read(), write(),malloc(), main(int argc, char *argv[]), etc...

Update Description:
Version 1.2:
- Fixed on-screen keyboard problem.
- Added UserAbort() function.
- Included function documentation and library files.

Version 1.1:
- Implemented BOOT manager.
- You can now create AUTOEXEC.BAT files in memo.
- You can now delete TRGdos apps from within TRGdos.
- TRGdos apps can now have .exe extension.
- Included programmer's library source code and samples.
- Few bug fixes.