Can attributes appear at the beginning too?

Quick question for @zef:
Can attributes appear anywhere on a line? They can currently, but is this a part of the formal definition of the "SB language" that can be expected to not change in the future?

The Attributes page doesn't mention this, so I thought I'd ask.

Context: as this thread shows, I find it convenient to include task priorities at the beginning like so.

- [ ] [priority: B] Buy soap [scheduled: 2026-02-19]

Can I continue to assume this is fine?