I don't know if you have missed anything or not but one way to do this seems to be to use the setspace package and a bit of ERT. A quick test seems to indicate that \usepackage{setspace} in the preamble and a |\begin{doublespacing} and \ end{doublespacing} before and after any text in the article turns out a doublespaced PDF.
See http://tex.stackexchange.com/questions/122487/linespacing-latex-for-just-a-few-lines On 27 October 2015 at 01:58, Jerry <lancebo...@qwest.net> wrote: > The journal to which I plan to submit a manuscript requires double > spacing. So I went to Document -> Settings... -> Text Layout -> Line > Spacing and selected Double. (I'm using Article (Standard Class).) > > This made the rendered PDF double spaced but much to my surprise, the LyX > display also became double spaced! This is BAD. This is a lot WYSIWYG, not > WYSISYM. Now I can see only half as much stuff in LyX and I have to scroll > a lot etc. > > How can I make the LyX display maintain a nice compact appearance while > still having a PDF that is double-spaced? > > More to the point of LyX design: Things under Document -> Settings seem to > relate to how the _document_ looks, and things under LyX -> Preferences -> > Look and Feel (on OS X) affect how LyX looks. So there should be a setting > in Look and Feel for on-screen line spacing, separate from how the rendered > output will look. > > Please tell me that I've missed something. > > I'm using a 2.2 beta. > > Jerry -- John Kane Kingston ON Canada