The VB Team has a great article on snippets. Well, first off, what exactly is a snippet? It is a bit of code you constantly use over and over again. A great example is a property. If I start typing "Pro"
Then I'll get:
The green fields are called "snippet replacements" and are what you're suppose to verify.
The article has additional information regarding snippets. While you may be saying to yourself, this is worthless, it vastly reduces the amount of typing you have to do and tells you where you need to update!