Adblock Plus

Can anyone tell me what the difference between Adblock and Adblock Plus is? I can't seem to find a list anywhere. Also what is the relation between the two extensions? Is Adblock Plus based on the code of Adblock, if so what version and build. Is it an addition to Adblock. Does Adblock need to be installed for Adblock Plus to work??

Sorry if the answers are obvious.

Thanks in advance.

Adblock Plus builds on top of the last official release of Adblock seen here. Here are the main things Adblock Plus adds. For a full changelog see this.

• Whitelisting, prefix your filters with "@@" to allow an item normally blocked by another filter through. Credit to OneStop.
• Synchronization (import) with filter file on website or hard drive using URL. Can be synchronized manually or automatically.
• Ability to block DIV sections allowing a much greater range of images to be blocked. Credit to Rueschi.
• Can hide ads on a per site basis instead of globally. Now an option under Adblock's menu.
• Choice of displaying a status bar icon or toolbar button as well as the status bar text.