After a long debacle with a print stylesheet issue.. the following lessons have been learnt:
If a stylesheet is linked to like this:
as there is no media attribute set it will default to being both the screen and print stylesheet (if there is no more specific stylesheet set with a particular media attribute.)
However if you set a media attribute it will only affect that so for e.g.
media="screen" type="text/css" href="/t4cms/cws_sub2.css" rel="stylesheet">
This will only affect screen – it will not default as the print stylesheet if there is none present.