Highlighting mode - from this submenu you can select a highlighting mode locally, for the current document.
Hide highlighting - hide the highlighting in the document. It removes syntax hl., and spellchecker marks too.
Toggle images visibility - show or hide images near their IMG/SRC tags directly in the text. Currently it works for HTML and XHTML files only.
Refresh highlighting - TEA has a very ugly ability to highlight a code. With this function, you can update the hightlighting manually. Use it often, have a joy.
Word wrap - do you need an explanation? And why I write that paragraph?
Line numbers - the song remains the same...
Preview with Mplayer - this item is related to the chapter How to edit and preview SRT-subtitles.
Imageplane - open the thumbnailed image browser. From there you can view images in the built-in image viewer or insert image-tags/elements into the current document. To view image in a full-size click on the thumbnail. To insert image tag, turn on Insert tag option and then click some thumbnail. To set this option bu default use Preferences > Switchers > Imageplane insert tags by default.