I edited the prior post a few times, perhaps after you read my first thoughts, so you might want to reload the thread.
TextEdit.app is located in the Applications folder. I use it often and have it in my Dock.
I tried copying a web page into my Pages '09 v 4.1 app and did not encounter the black X boxes.
Since you're new to Pages, one thing you might want to know about is that Inspector, Link Inspector (2nd from right) Hyperlink allows you to enable/disable all hyperlinks (web links are usually underlined and appear in blue) for ease of editing, so if you click on a link while trying to edit, it won't automatically try to open it in Safari again.
One more solution if you do LOTS of re-editing this way and need the ability strip out everything except the text is a paid app called ApiMac Clean Text. Details here: http://www.apimac.com/mac/cleantext/
I used to do some programming, and a versatile text editor was an essential part of my 'toolkit'.
I like to clean up everything, so I always copy and paste material from the internet into
an email. I thought it was happening with original text, perhaps not. It would explain why
it occurs in pages too when I copy and paste into pages.
I am somewhat new to Apple and need to play with this a bit but I suspect the answer is in here.
I thought it was doing it with original text that I had typed into an email, but perhaps not.
I'm not sure how to use text edit, or even how to find it but I will look into that and write back if I have
Thanks very much kostby for your help.