Action Menus look like three stacked dots
Action menus allow the suer to perform actions on either a single object or a list of objects.
They look like this

When the Action menu is in the top right hand corner.
When the Action menu is at the end of a row, it operates on the item in the row.

When Action menu’s are clicked, they create a drop-down menu

The content of menus are context sensitive
The Action menus do not contain items that are unavailable in this context or for this user (there are no ‘greyed-out’ items)
Action menus on mobile:
The Action menus on mobile in the top right corner are smaller and are white on black. Like this:

End-of-row menus are activated by tapping the row content.
Action menu items are displayed as a splash. Like this:
