By default, the Edit toolbar provides quick access to common editing commands like Copy and Paste.
If the toolbar is currently hidden, go to View > Toolbars and select it to show it.
Undo (
Redo (
Cut (
Copy (
Paste (
Format Painter (CTRL+SHIFT+C): Copies appearance formatting and properties from one markup to another markup or group of markups.
Delete (DEL): Deletes the selected markup.
Flatten Markups (CTRL+SHIFT+M): Flattens markups in the current document, moving them from the markup stream into the main body of the PDF.
Snapshot (G): Copies content and markups from the PDF to the clipboard, from which it can be pasted into a Snapshot markup or another program.