(svo): Don't know about such an option - available ones are:
ashtancolor         assumestats         autoarena           autocheck
autoclasses         autoclassset        autoreject          autorewield
autoslick           autotsc             batch               bleedamount
blockcommands       boldashtan          boldcity            boldcyrene
bolddivine          boldeleusis         boldhashan          boldhouse
boldmhaldor         boldorder           boldrogues          boldtargossas
boldwatchfor        breath              buckawns            burrowpause
burstmode           cadmusaffs          ccto                changestype
citycolor           classattacksamount  classattackswithin  clearlabels
clot                commandecho         commandechotype     commandseparator
corruptedhealthmin  curemethod          customprompt        cyrenecolor
deathsight          divinecolor         doubledo            dragonflex
dragonheal          dragonhealfunc      echotype            efficiency
eleusiscolor        elmid               enableclassesfor    eventaffs
fishhighlight       fitness             fitnessfunc         focus
focuswithcadmus     freevault           gagbreath           gagclot
gageqbal            gagotherbreath      gagrelight          gagservercuring
gagserverside       hashancolor         havelifevision      haveshroud
healthaffsabove     herbstatsize        highlightashtan     highlightcity
highlightcyrene     highlightdivine     highlighteleusis    highlighthashan
highlighthouse      highlightignore     highlightmhaldor    highlightorder
highlightrogues     highlighttargossas  highlightwatchfor   hinderpausecolour
housecolor          ignoresinglebites   ignoresinglestabs   insomnia
italicizeashtan     italicizecity       italicizecyrene     italicizedivine
italicizeeleusis    italicizehashan     italicizehouse      italicizemhaldor
italicizeorder      italicizerogues     italicizetargossas  italicizewatchfor
labelcolor          labelsfont          lag                 lustlist
lyre                lyrecmd             manableedamount     manause
medprone            mhaldorcolor        mindnet             moss
mosshealth          mossmana            ndbpaused           ninkharsag
oldts               ordercolor          org                 pagelength
parry               peopletracker       politics            preclot
refillat            relight             repeatcmd           restore
restorefunc         roguescolor         shindoblind         shindodeaf
shipmode            showafftimes        showbaltimes        showchanges
singleprompt        singlepromptblank   singlepromptkeep    singlepromptsize
siphealth           sipmana             siprandom           skullcapid
slowcurecolour      steedfollow         targossascolor      thirdeye
tree                treebalance         treefunc            underlineashtan
underlinecity       underlinecyrene     underlinedivine     underlineeleusis
underlinehashan     underlinehouse      underlinemhaldor    underlineorder
underlinerogues     underlinetargossas  underlinewatchfor   unknownany
unknownfocus        unmed               usehonors           valerianid
waitherbai          waitparalysisai     warningtype         watchfor