Tabbing in gmail symbol

You're referring to the "›" symbol in Gmail!

The "›" symbol is used to indicate a tab in Gmail. When you click on a tab, it takes you to a specific section of your inbox, such as:

› Primary: Your regular inbox › Social: Messages from social media platforms like Facebook, Twitter, and LinkedIn › Promotions: Commercial emails from companies and organizations › Updates: Newsletters and updates from websites and services you've subscribed to › Forums: Messages from online forums and discussion groups › Updates from your contacts: Emails from specific contacts or groups

The "›" symbol is used to separate these tabs and make it easy to navigate your inbox.