I am new to SilverStripe so I apologise if my problem has been addressed before but I couldn't find anything in the Forum.
If I write a line of page text in the CMS Admin content editor and then check in the HTML view, I have no preceding <p> or concluding </p> but when I publish the page and check in "view source" in my browser, two preceding <p>s and two concluding </p>s have been added.
Although the page displays correctly, it means that the page will not vaildate.
Sorry, I should have said it is on standard pages using the Higherground theme.
I can't see anything in the Page.ss file to cause this but I have had a number of other problems with the theme so maybe it is in that. I notice the same problem on the Silverstripe site in the Preview demo pages for this theme.
I also notice that where I thought that I had deleted the preceding and concluding para tags from the HTML in the page text editor, then selected "update" and "publish" - when I reload that page in the CMS, the para tags have reappeared.