And this to:
Frame A listing of frames is the sequence of Pokémon who can be captured or of IVs that may be passed to an egg, given a particular initial seed. A frame number, or target frame, is what you want to land on to get the desired result. There are different methods for targeting a particular frame, depending on what you are doing or where you are in game. For instance, when collecting an egg, the frame will advance based on the amount of time that you spend before taking an egg. When in a quiet cave, the frame does not advance at all on its own, but can be advanced by in-game actions, such as walking or viewing your journal.