What you could do is make each string an entity and toggle it's visibility when it's out of the text box, not exactly optimal but it does work.
EDIT:
Also GML is a Highlevel while C/C++ is a mid to low level, and ASM being the lowest before binary
EDIT2:
The "level" of a language pertains to the amount of abstraction there is, the more abstraction, the higher the level.