How to Add ZScript Commands to ZC

//Add a new zscript instruction

//Drawing

Script_Drawing.cpp
add function
add opcode redirect with ZASM label

GlobalSymbols.cpp

Add table entry, with proper args values. The entry name should match the ZScript instruction.
Add function to bind the name in the table to the O-Register

Bytecode.cpp

Add ORegister redirect that returns the ZASM instruction

Bytecode.h

Add class ORegister entry tat returns the opcode entry in Bytecode.cpp

ffasm.cpp

Add entry to script command list, using the ZASM label

ffscript.cpp

Add case statement to switch(script_command) and ensure the args value matches that in GlobalSymbols.cpp

Add case entry to switch(scommand), and ensure it is in the script commands case list
Both of these use the ZASM label

ffscript.h
Add the ZASM label to the ASM_DEFINE table.