Using one command block, I effectively added a parachute into bedrock and found an excuse to make the longest command I've ever made. : r/MinecraftCommands
1.5.2/2.0] XCommands - Public Release (Last updated: 16th July) - Minecraft Mods - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
Minecraft 1.5.2 command block tutorial - YouTube
My Favorite Command Block Commands : 6 Steps - Instructables
Console Commands and Cheats List - Minecraft Wiki Guide - IGN