# Definition for Division 5.1

> reg-5.01 — as in force on 2026-06-01 — F2026C00497 · Compilation No. 287 — https://www.legislation.gov.au/F2026C00497/latest/text

5.01 Definition for Division 5.1
               In this Division:
               document includes:
                (a) a letter; and
                (b) an invitation, notice, notification, statement or summons, if it is in writing.