Proposal: A blockquote tool should be added, surrounding the selected paragraph or paragraphs with a blockquote.
Menu location: in menu Format.
Menu item title: "Blockquote".
See also this tool in Kafenio editor.
Logged In: YES user_id=625500 Originator: YES
(KAF) means "present in Kafenio".
Logged In: YES
user_id=625500
Originator: YES
(KAF) means "present in Kafenio".