(;GM[1]FF[4]SZ[19]
GN[The empty triangle]
PC[http://senseis.xmp.net/?AStaticTreatiseOnShape]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?AStaticTreatiseOnShape

The empty triangle]
PL[W]

AB[ii][ji][ij]
LB[jj:a]


;LB[jj:a]
)
