Office 365 - Microsoft Teams - Use Commands
Information and a link to Microsoft Support's article about using commands in Microsoft Teams.
Commands are shortcuts for performing common tasks in Teams: update your status, go to a specific channel, show your recent files and saved messages, and more.
To use a command, type / in the command box at the top of Teams. You'll see a menu of all the commands we currently support. Select the command you want, press Enter, and Teams takes care of the rest.

*Tip: You can also press Alt+K (Windows) or Option+K (Mac) to open the command list.

*Check out the Microsoft Support article called "Use commands in Teams" for the full article and list of commands available in Teams.