The super-neatness conjecture for finite projective planes

A finite projective plane is a $2$-design whose parameters satisfy the projective-plane axioms; its incidence graph is the bipartite graph joining each point to the blocks containing it. Super-neatness conjecture. Every finite projective plane is super-neat. The source gives no definition of super-neatness in the supplied context, so the precise property being conjectured cannot be stated here.