Instant TSRs Create TSRs in an instant with just five lines of code. They can be safely uninstalled under internal program control, or by external request. Even BIOS keystroke stuffing is available. In fact, multiple TSRs can activate each other repeatedly, with two-way communication throughout. The new built-in Assembler may be just what you need.
Hand optimize the most critical sections for absolute performance.
There are unsigned byte, word, and double word variables. Integers of 16,32, even 64 bits. Single, double, and extended precision floats. Finally you can eliminate round-off errors, even those associated with currency variables in other languages. You aren't forced to 4 decimal places.