# Let’s specify a reversion number

Hello everyone, It’s Ray!

Today I am going to share with you how to use git tag to specify a reversion number

After we complete a series of small functions, it could mean that we are going to release a new reversion. For example, think about the online games that you’ve played.

# How to use checkout

Hello everyone, it’s Ray!

Remember where we were in my last article? I hope that the image above would do some help.

You are right, last time we introduced how to initialise Git, and create a file called example1.html, and then complete our first commit.