What is the best BASIC Pocket Computer

[Dave Britten]

I found a really good English reference for the fx-890P, which appears to be similar enough to the VX-4/fx-870P that it's still extremely useful for those machines:

https://www.manualslib.com/download/7326...-890p.html

I have noticed some differences in functionality and available commands - the VX-4 doesn't appear to support labels, or the BASIC graphics commands, for instance. It also appears to be lacking graphical functions in C.

The C dialect is K&R, with its weird syntax for declaring function argument types, and forward-declaration/prototyping of functions is messy at best. You're better off just defining the functions before they're used. Or better yet, use BASIC, because the C interpreter is so much slower.