Select a word that has a typo in it (for example, search for haiti in Nicene and Post-Nicene Fathers, First Series; it should be "had").
Type in what you think the correction should be.
Alt+Tab away to Web browser (I was going to copy the URL and cite page number from Google Books where I found the correct word).
Alt+Tab back to Logos.
The dialog box has disappeared and you have to bring it up again, which is a pain because it's a long wait for the right-click menu to be populated enough for Report typo to show up at the bottom left. [:(]