Neither of those solutions are perfect so I’ll definitely let you know if we have other suggestions!
Carol – you can use the header sizes to change the formatting – but also you can make changes in the theme – Jane from our support team put together a more detailed HOWTO – http://nationbuilder.com/janeroberts/how_do_i_adjust_font_sizes_in_the_wysiwyg_editor
If you hold down ‘shift’ at the end of a line when you hit return it will be single spaced.
Submitted: We have received your issue report.
Once we begin work on this issue we will change the status – right now we do not have a timeline.
Sorry for the confusion!