Now that you've learned so many different commands, an easy way to reuse those commands without having to type them in all the time in the Command Center is by creating a button. To create a button, you select the +Add and then click somewhere in the white space below. A button dialog box should appear. Type the following Observer commands into your button and give it a Display name of setup then select OK.
ca
crt 10
Click on your new setup button. Did 10 turtles just get created? Now try creating a button to change the shape, color and size of your turtles. Remember, these are Turtle commands.