Insert {{Seoul Metropolitan Subway stations |line#=yes}}
. Replace "#" with the line number.
{{Seoul Metropolitan Subway stations |state=
|line1=yes |state1=
|line2=yes |state2=
|line3=yes |state3=
|line4=yes |state4=
|line5=yes |state5=
|line6=yes |state6=
|line7=yes |state7=
|line8=yes |state8=
|line9=yes |state9=
|arex=yes |statear=
|bundang=yes |statebd=
|ever=yes |stateev=
|gyeongchun=yes |stategc=
|gyeonggang=yes |stategg=
|gyeongjung=yes |stategj=
|sinbundang=yes |statesb=
|suin=yes |statesi=
|uijeongbu=yes |stateuj=
|uisinseol=yes|stateus=
|seohae=yes| statesh=
}}