SLC_VARIABLE
spcp->mylevel = SLC_VARIABLE|flags; \
IAC, SB, TELOPT_LINEMODE, LM_SLC, 0, SLC_VARIABLE, 0, IAC, SE
case SLC_VARIABLE:
setval(VEOF, SLC_VARIABLE);
setval(VERASE, SLC_VARIABLE);
setval(VKILL, SLC_VARIABLE);
setval(VINTR, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
setval(VQUIT, SLC_VARIABLE|SLC_FLUSHIN|SLC_FLUSHOUT);
setval(VSTART, SLC_VARIABLE);
setval(VSTOP, SLC_VARIABLE);
setval(VWERASE, SLC_VARIABLE);
setval(VREPRINT, SLC_VARIABLE);
setval(VLNEXT, SLC_VARIABLE);
setval(VDISCARD, SLC_VARIABLE|SLC_FLUSHOUT);
setval(VSUSP, SLC_VARIABLE|SLC_FLUSHIN);
setval(VEOL, SLC_VARIABLE);
setval(VEOL2, SLC_VARIABLE);
setval(VSTATUS, SLC_VARIABLE);
case SLC_VARIABLE: