Counter: if you added or deleted a line to a script you had targeted elsewhere with SCLINE it would break the references throughout the rest of your scene.
I don’t know if it’s possible to have arbitrary (can’t remember what they’re really called but the) : operators, to ‘name’ a line. Almost like function/method names.
FOO: TR.PULSE 1
and then call EX FOO or something to execute.
I am assuming there are very good reasons why Teletype doesn’t support named functions. But, referencing a specific number line in a script seems to be asking for things to break.