Updating os x 10 3 9
Text Edit was updated to support Microsoft Word documents.
New features include Fast User Switching (you no longer have to log out so another user can log in), Exposé, File Vault (use at your own risk), and i Chat AV, which added voice and video conferencing to the Mac’s messaging client.Instant Hotspot requires an i Phone or i Pad with mobile connectivity with a Lightning connector and i OS 8.1 or later.The Mac App Store shows updates for Mac, not updates for i Phone, i Pad, or i Pod touch.Apple makes no representations regarding third-party website accuracy or reliability.
While its true older Macs can use newer operating systems, Apple can be a little much sometimes pushing OS updates that really don't do a heckuva lot more than previous systems (save the flames, I'm talking about "average user" situations).
The system requirements are: Panther still supported the Classic environment fully for running older Mac OS 9 applications but made Classic application windows double-buffered, which interfered with some applications expecting to directly draw to the screen.