(;GM[1]FF[4]SZ[19]
GN[Mixed four space extension]
PC[http://senseis.xmp.net/?ArticleOfTheWeek/Archive2010]AP[GoWiki:2009]
DT[2011-01-06]
C[Diagram from http://senseis.xmp.net/?ArticleOfTheWeek/Archive2010

Mixed four space extension]
PL[W]

AB[lp][gq]
LB[ip:a][jp:b]


;LB[ip:a][jp:b]
)
