: I think Ian did this for a reason and am therefore reluctant to change it.
: It's a sort of practical joke - that one O2 canister at the end will leave
: you still with only a half-a-tank with which to explore the final room,
: pick up your ammo and read the terminals. The player will still be tempted
: to use it - they'll like getting a shield recharge but, OMG, almost out of
: O2 - gotta get out of here!
Good point, but it's not a very funny joke :/ Or maybe I just have a personal grudge against this recharger after it failed to save my life and forced me to retry that level another dozen times...