556. Persons unlawfully at large.

In calculating the period for which a person sentenced to service detention1 is liable to be detained, no account is to be taken of: (1) any period when that person is unlawfully at large2; (2) any period of temporary release on compassionate grounds3. In calculating the period for which a person on whom a custodial sentence4 has been passed in respect of a service offence5 is liable to be detained, no account is to be taken of any period within heads (1) and (2) before the person is committed to the appropriate establishment6. For these purposes