Which is not meant to shame you for not knowing. When the game was first made, the rule was exactly as you stated in your first comment. But at that time moving was a one step process. You just....moved. They realized that movement needed a little more structure as to exactly when different things happened and so they created steps for it, which were first put into the supplement. At the time though, enchantments still weren't allowed to be revealed between these steps. It stayed that way for nearly a year. By the time they finally said that enchantments could be revealed between these steps, same as for attack steps and spell casting steps, the game had been out for about 3 years. It's very understandable that many people are still playing by the old rules.
But the current rules, which you'll have to abide by in official tournaments and such, are as I stated. Move actions have steps and you can reveal between them. As long as you reveal before Step 5: Move, you can potentially cancel the move.