I just read showcase Green Lantern and i got a few general questions. Most of them are a "when did this change?" type of variety...
Hal used to put on his uniform like one would put on clothes then charge the ring...when did it change that the suit would suddenly appear on the wearer?
Hal called himself green lantern because of what the battery looked like, even the corp werent known as "Green lantern corps". Even the guardians, when they first summoned Hal, said that they were looking for him but instead found a person "called green lantern" was now wearing the ring...they didnt realize, at first (until Hal told them), that they were one and the same. So, when did this change? At one point did Green Lantern become the name for all of the corps?
Also, the oath...they did a story explaining how hal came up with it, but i've seen the entire corps repeat the oath plenty of times so when did hals personal oath become the oath of the corps?