The player can step out of a portal before it completes its animation to abort the teleport. While in the nether portal block, the player can neither open their inventory nor interact with blocks with GUI. When a player in the Overworld or the Nether stands in a nether portal block for 4 seconds, the player is taken to the other dimension. Nether portal blocks can be used to teleport entities between the Nether and the Overworld. When the block is updated and detects it is not part of such a structure, it is destroyed. Nether portal blocks can stably exist only within a nether portal structure, unlike end portal blocks.
