regarding Mac OS:

blockquote tags are now recognised in my browsers
unordered list tags are recognised in my browsers
font tags work in my browsers

just a few bugs remaining:

• there's no html checkbox or buttons showing in any of my browsers
• the notify checkbox is always checked
  even though I have unchecked notify in all the forums
• nor are the "return" nor "enter" keystrokes recognised,
  even though they show up in the source code