I suppose that it will be simpler to test theories on user's local
machine and only after local testing submit theories to
vdash.org. Am
I right?
What are the means to create and test theories? Especially, what about
Proof General? (Does Proof General works with structured Isar proofs,
or it is only for old style "apply" proofs?) Should an editor of
vdash.org use Proof General or whatever?