If there are only a few of these tags they can be manually removed by viewing the HTML source by clicking the "<>" button in the top left. The easier option is to paste the content from Word or other websites into a simple text editing program. This simple text editor strips all the formatting away from the text. Then copy and paste the text from Text Edit into your website and there will be no formatting issues.
On a Windows computer the programme is called 'Note Pad'
On an Apple Mac the programme is call 'Text Edit'
Hot tip for Mac users
On a Mac you can also avoid the above steps by copying the text and pasting the text directly into your Rocketspark website text editor by hitting the Shift, Alt, Command and V keys simultaneously to paste the text and match the formatting of where you are pasting to.
It's a handy trick to know when working in other programmes too.