1/ when creating a new HTML page in resources, the default name is "New HTML Page" - this is wrong as
i) webpages shouldn't have spaces in them
ii) web pages should end with .html
Change this text to (something like) page.html.
2/ Also change the label of the textbox from "Name" to "File Name (only use: 'a'
'z','A''Z','0' '9','','_',no spaces)" - or (again) something very much like this.