Keynames for dialogs... Example:
edit "", 4, 54 4 90 10, read autohs Keyname=Username

Thus removing the confusion of ALL those darn numbers! You could $did($dname,Username) rather than $did(4)
Granted this is simple to script but it doubles code size (by meaning size of dialog table) since you cant do it inside the dialog table, you would have to do it on init or something. I make extensive dialogs with tons of ID's especially when it comes to tabs, each tab has a ton of ID's on it, and I frequently have to scroll up and go, oh that $did is "x", where if you could give it a keyname, it would save having to scan back through your dialog table to find the item you wish to script an event for.