"{ }" explanation

[The Hyphy Goose 0]

Looking for quick feature explanation for this functionality within toolbar ({ }) - thanks!

[jefito 5,532]

It creates a code block around whatever you have selected, or an empty one if nothing is selected.

Typically, if you hover over a toolbar item with your mouse, it will show an indication of what it does. Of course, if you're on a mobile device or just have a touch screen, that may not be so workable.