Hi Bob et al.
I'd like to suggest that Logos 4 be given a 'highlighter mode' - that is, that rather than having to click a section of text and then press control-K or click on the highlighting you want, you be able to double-click on a highlighter and then have that highlighting apply to any text you select thereafter (perhaps until you click a "Stop highlighting" button in the Highlighting pane).
Thanks for all your work! I'm getting to like Logos 4 more all the time!