The save part wasn't my problem. I just wanted to make changes active and retest the script to see if the change worked (or didn't) or required a refinement.
Once I'm happy, or at the end of working on something for the day, only then do I file,save.
No point in saving when I'm making the situation worse

But (back on topic) I would still like to see an apply/commit button instead of having to remember Ctrl-S (which suggest it should mean file,save).