IMO the straightforward part is coming up with functions to expose from the host program to the scripting language. But what's trickier is figuring out which of

IMO the straightforward part is coming up with functions to expose from the host program to the scripting language. But what's trickier is figuring out which of the program's "domain" datatypes to expose, and if/how the scripting language should interact with such values as anything more than opaque handles.