TMXR_GUARD 1506 src/simh/sim_tmxr.c lp->rxbsz - TMXR_GUARD); /* leave spc for Telnet cruft */ TMXR_GUARD 1777 src/simh/sim_tmxr.c if ((!lp->txbfd) && ((unsigned long int)TXBUF_AVAIL (lp) <= TMXR_GUARD)) /* near full? */