metaprogramming support #32
Description
Because why not?
Some ideas:
GOSUB 970: execute BASIC code contained in OB$. If it's an expression, the result will be in OV or OV$.
GOSUB 971: insert / replace lines in the program. OB$ contains a line of BASIC code (complete with line number) that replaces the current one with the same number if it exists, or inserts a new one.
GOSUB 972: request lines from the program. OB contains a line number, and OB$ afterwards contains the source code of the respective line.
GOSUB 973: dump the entire source code to the Java console, or save it to a file, if OF$ contains a name.