Taco Software (http://tacosw.com/) has released Taco HTML Edit 3, the latest edition of its HTML and PHP editor for Mac OS X. For Mac OS X 10.7 (“Lion”) users, the upgrade adds support for Autosave, Versions, Resume, and Full Screen.

With Autosave, documents are automatically saved while they are edited; it’s no longer necessary to manually save documents. Versions complements Autosave by allowing users to view and restore previous versions of a document.

Taco HTML Edit 3 provides a new interface for error checking, and can find errors in HTML, CSS, JavaScript, and PHP. The new CSS error checker is based on the working drafts of the W3C CSS3 specification. PHP error checking now executes the PHP code, just like for previewing a PHP document. This allows both syntax and runtime errors to be reported by the error checker.

The Navigator, new in Taco HTML Edit 3, shows an outline of your HTML, PHP, JavaScript, or CSS document, allowing you to move to a different location. Links to other documents are represented with an arrow in the Navigator, which can be clicked to open the linked document. A variety of linked items will appear in the Navigator, including hypertext links, script and style references in HTML, PHP includes, and CSS imports.

Taco HTML Edit 3 adds two new components to the Component Library: Video Player and Modal Dialog. Video Player lets you add HTML5 video to web pages, with an optional Flash Player fallback. Modal Dialog allows a dialog with a translucent overlay to appear over a web page, showing any HTML content. Taco HTML Edit 3 has other new features, including Code Folding, a new command for commenting and uncommenting code, find and replace with HTML character codes for non-ASCII characters, and more.

Taco HTML Edit 3 costs US$24.99 per license, and can be downloaded from Taco Software’s website or purchased from the Mac App Store. Taco HTML Edit requires Mac OS X 10.6 or later. A free, 30-day trial is available.