Is there a keyboard command to center my cursor in my edit box?

In emacs, I can type Ctrl L and that moves the text I am editing to center the current point at the middle of the edit window.

In discourse, if I get to the bottom of my edit box and it is running off the bottom of the browser window due to me having enlarged the text to see it better, I have to go groping off to the right for the scroll bar to move everything so I can go on editing. This is one of the few big annoyances of Discourse, to me. It really breaks the flow.

Is there a keyboard command I can just type in the midst of editing to make the current point jump to the middle of what is visible to me?