| avhdr.leb = VTBL_LNUM, wlar[n].status = used, avhdr.vol = VTBL_VOLID, apebs[n] = mkpeb(aehdr, avhdr, buf, m, boolvar), n < # wlar, n < # apebs, is-encoded(to-vtbl(vols), buf), valid-eraseq(wlar, q), n ∈ q ⊦ |
avhdr.leb = VTBL_LNUM, wlar[n].status = used, avhdr.vol = VTBL_VOLID, apebs[n] = mkpeb(aehdr, avhdr, buf, m, boolvar), n < # apebs, n < # wlar, is-encoded(to-vtbl(vols), buf), valid-eraseq(wlar, q), n ∈ q ⊦