Answer: dos

AnswerCrossword Clue
DOSHairstyles
DOSTwo in Toledo
DOSBobs and flips, say
DOSIt has a command-line interface
DOSShindigs
DOSLavish parties
DOSPartners of don'ts
DOSThey're recommended
DOSAfros, e.g.
DOSHair arrangements
DOSDesirable activities
DOSAuthor John ... Passos
DOSRules to follow
DOSStyles
DOSThey're highly recommended
DOSWindows preceder
DOSBalls, e.g.
DOSAdvisor's list
DOSCoifs
DOSFlips and buns
dosto proceed
DOSSalon jobs
DOSMS-..
DOSWindow's predecessor
DOSWindows precursor
DOS.. and don'ts
DOS... Equis
DOSPermissible actions
DOSTwo, in Tijuana
DOSUno + uno
DOSGood-etiquette items
DOSJohn .... Passos
DOS.. Equis
DOSOld PC platform
DOSWingdings
DOSRecommended actions
DOSAntepenultimate countdown nĂºmero
DOSHairstylist's creations
DOSEarly PC platform
DOSTwo for Juan?