Join Text
The join block allows you to stick two or more pieces of text together.
note: Programmers often refer to pieces of text as Strings and the process of join bits of information together is sometimes called concatenation
Example 1
In this example, two pieces of text are joined together and displayed in a label. The message, “hello world”, will never change.
Example 2
This example is a little more interesting. The text in the label will change depending on what the user
types into Text_Input1.
In many cases you’ll want to make sure that a user doesn’t leave an input blank, and we’ll cover how to do that in the next tip.
Example 3
You can join together as many strings as you like by clicking on the blue gear icon 
(also know as a block mutator) and manually add in extra items, where ever you want them.
