import memmgr
    //
    // Utility routine
    //
    predef sweep#0, brk(addr), sbrk(size)
    //
    // Memory routines
    //
    predef hmemNew(size), hmemLock(hmem), hmemUnlock(hmem)#0, hmemRef(hmem)#0, hmemDel(hmem)#0, hmemFre(lptr)
    //
    // Max size of a memory block
    //
    const MAX_MEMBLK_SIZE = $2000
end
