Is the HTML shown via 'View Source' different from the HTML shown in (Firebug) developer tools?

Question

I\'m using Firefox alongside Firebug Developer tools.

Is the HTML shown in View Source (Ctrl + U) different from the HTML I see when inspecting elements

Answer 1

It should also be noted that aside from the dynamic DOM manipulation which could be occurring via javascript etc, Firefox will also parse and "clean-up" malformed (X)HTML, so these changes will also affect what you see when inspecting an element.