"Clicking the plus yields a popup menu, none of ..."

https://arbital.com/p/8vz

by Sonata Green Dec 6 2017


To create a mark, highlight some text on a page, then click the plus which appears on the right border of the page\.

Clicking the plus yields a popup menu, none of whose entries include the word "mark". My best guess at the intended action was the "This is confusing" option, which appears not to offer me the option of describing my confusion.