With PScript being an interpreter running on the embedded device we need to be realistic about how much we can get in. Plain is a complex language in full, so we need to limit and adjust content with Flasgh size of the package in mind. One example is CAN on STM32. CAN is ca 50 registers with up to 32 bit fields each. To enable all this in detail to PScript would require a table with up to 1600 entries. This is a typical area where I have to accept that while this would be nice to have, it will use to much space.
So to access CAN I end up with only an abstracted interface of a few functions. I believe this is a good compromize and a needed one.