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VoiceOver can announce text formatting, such as bold font, italics, underline, font, etc., as well as whether text is misspelled. For this, it needs the AXAttributedStringForRange attribute supported. This commit does exactly that. Testing can be done in this way (VO stands for Ctrl-Option): * first interact with the text (VO-Shift-down arrow when standing on the text element) * to announce text attributes for character after cursor, press VO-T * to seek for next: * misspelled text: VO-Cmd-E * color change: VO-Cmd-K * underlined text: VO-Cmd-U * many more (see VO-H-H, "Find", close help with Esc) * to seek for previous *: just add Shift to the shortcut Some attributes remain to be supported (full list of attributes is available at: https://developer.apple.com/library/mac/documentation/cocoa/reference/applicationkit/Protocols/NSAccessibility_Protocol/Reference/Reference.html#//apple_ref/doc/uid/20000945-SW53). The misspelled text VoiceOver support can be used nicely with TextMate's spelling support: 1. the user finds next mistake with VO-Cmd-E, hears the misspelled word, perhaps reads it on a braille display 2. the user then presses Cmd-; to show the spelling menu for that word and chooses the desired resolution (apply suggested correction etc.) 3. go back to step 1. :-)