Word 2000 was not initially intended as an HTML editor. Sure, it came with the ability to "save as web page" which would convert whatever you were working on into html. That's not the same thing as being an HTML editor. Actually, MS had to issue a filter for MS Word 2000 HERE in order to actually "export" what you were working on to standard HTML.
Word 2000 was, at best, supposed to be a WYSIWYG editor... what you see is what you get. You arrange how you want the web page to look, and when you save (or later Export) it produces the code necessary to support how you wanted it to look.
That backwards P symbol... look up on your tool bar. You should see one just like it to the immediate left of the Zoom percentage pulldown. The symbol is called the Pilcrow. It is a paragraph mark.
If you wish to copy HTML and edit it, you would do better with something like Notepad, or even Notepad++ which will give you better organization and color coding. Oh... and either switch to using a more up-to-date Open Office or Libre Office as both are free and will do more of what you want.