Scratch command blocks

Scratch Tool	Technique - What does the tool do?	Description - What was the tool used for?
Script: When (Green Flag) clicked	When you click on the green flag animation will start	To start the animation
Script: When Backdrop switches to (backdrop)	When you click the background it will switch to another background if you have another background and the sprite will do the things you put under it	To change the background and do the things you put under it
Script: Broadcast (message 1)	Make the other sprites and the background do whatever you want as if they were in the army	Makes the other sprites and background do whatever you want if it takes to long to move all the sprites.
Script: Broadcast (message1) and wait	It is like the broadcast message it sends a message to all sprites not only that it waits for all the sprites to finish before continuing something else	It is used for making other sprites do the things you want them to do and it waits till they all are finished before continuing something else otherwise everything will be messed up
Script: Motion: Move (10) steps	Makes your sprite moves 10 steps and it can be changed to another number	Making whatever type of sprite move the number of steps you want
Script: Control: Forever	Makes your sprite do something forever like changing color	It was used for making a sprite do something forever like making a word change color forever.

This is my Google document on scratch about what some command blocks do.