support for @reboot command in cron

Cron has some cool commands that the NAS cron creator doesn't seem support
@yearly (or @annually) Run once a year at midnight in the morning of January 1 0 0 1 1 *
@monthly Run once a month at midnight in the morning of the first of the month 0 0 1 * *
@weekly Run once a week at midnight in the morning of Sunday 0 0 * * 0
@daily Run once a day at midnight 0 0 * * *
@hourly Run once an hour at the beginning of the hour 0 * * * *
@reboot Run at startup @reboot
Quick solution would be to allow the user to paste their own cron command in the generate cron job text area.
I think the @reboot would be a very nice and clean addition for user startup scripts for the NAS
Does the current cron binary support it?
@yearly (or @annually) Run once a year at midnight in the morning of January 1 0 0 1 1 *
@monthly Run once a month at midnight in the morning of the first of the month 0 0 1 * *
@weekly Run once a week at midnight in the morning of Sunday 0 0 * * 0
@daily Run once a day at midnight 0 0 * * *
@hourly Run once an hour at the beginning of the hour 0 * * * *
@reboot Run at startup @reboot
Quick solution would be to allow the user to paste their own cron command in the generate cron job text area.
I think the @reboot would be a very nice and clean addition for user startup scripts for the NAS
Does the current cron binary support it?