Function is_non_controller_keyword 

pub fn is_non_controller_keyword(name: &str) -> bool

Returns true for ASCII MDL keywords that should NOT be interpreted as inline controllers, even if they could parse as float values.

This list covers all mesh, light, emitter, dangly, aabb, skin, animmesh, and reference fields, plus structural keywords (node/endnode, model header directives, animation directives).