Always prtess and hold F3 then press another button.
- F3 + Q - help menu
- F3 + A - reload all chunks.
- F3 + T - reload all textures, sounds and web-loaded client resources, which is useful for resource pack authors.
- F3 + P - the auto-pause when the window loses focus.
- F3 + H - detailed item descriptions.
- F3 + C - for at least 6 seconds will trigger a manual debug crash on purpose after the keys are released.
- F3 + B - showing the hitbox around entities.
- F3 + D - clear chat history (including previously typed commands)
- F3 + N - switch the player's game mode between Creative and Spectator.
- F3 + G - show the chunk boundaries immediately surrounding the player
