Lua find variables for system in different files

[lukatxd]

I'm fiddling with a system of over 3 thousand lines, and it is troublesome to keep going back and forth to read stuff.
Is it possible to separate variable declarations/other functions into separate files?

file 1:
enums declarations

file 2:
call functions using those enums

file 3:
call functions that are part of the system but would be better if left separated to file 2