NAME style/history — the HISTORY section
If you know for which version of which system a utility was originally invented, use the following wording:
utility first appeared in
If the functionality changed very considerably since that time, saying “a utility” instead of “the utility” may be preferable.
If you don't know where it was originally invented but do know when it was introduced into the direct ancestry of the system being documented, use the following wording:
utility has been available since
The MANUAL STRUCTURE section in the mdoc(7)