@RigTig has a very ambitious project: build a 3D printers for very large objects (e.g. a house) from almost nothing. STM8EF is a good match: it builds a programming environment for almost nothing (i.e. a STM8S003F3P6 µC). While the current code is already rather good, it needs to get better to meet RigTig's requirements.

Issue #27 on GitHub discusses use case, requirement, and solutions:

• Introduce assembler features
• Extend the compiler (tail call optimization)
• Introduce the ALIAS word class
• Mix STC with DTC (using ALIAS words), or ITC (using a Inner Interpreter)
• Malleable dictionaries
• and more

If Java is like coffee to make you type faster then Forth is like LSD which makes you see solutions in the fractal complexity of the universe!

EDIT: RigTig used the alias method to create a lean-and-mean configuration for the W1209 board: it fits in about 3.5KiB code, almost 2KiB less than the normal W1209 variant, LED display code included!

Check it out here.