mgroup
struct mgroup *gp;
if ((gp = (struct mgroup *)
struct mgroup *gp, *gpnext;
struct mgroup *ge_link; /* Next person in this group */
struct mgroup *g_list; /* Users in group. */
#define NOGE ((struct mgroup *)0) /* The nil group pointer */
struct mgroup *gp;
register struct mgroup *gp;