Konq text preview - readonly switch?

[John Pilkington]

I often view text files with the Konqueror 'preview in embedded advanced 
text editor'.  Under f13 I find this is readwrite, under Centos 5 it's 
readonly.  I've googled this several times, and hunted in the toolbars, 
but I haven't found an easy way to toggle in either.  What am I missing?

TIA

John P