Gases in divelist

[Robert C. Helling]

Am 17.03.2013 um 18:26 schrieb Dirk Hohndel <dirk at hohndel.org>:

> And of course there are the computers like the OSTC that always give you
> all defined gases and aren't air integrated. What do do for that? Show
> all? Show only those that have a gas change event?

What about the following hack: a cylinder is ignored if it has a start and an end pressure and they agree?  Or if the start pressure is set explicitly to 0? This would allow to delist it explicitly. 

Robert