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accessibility.tabfocus controls what elements receive focus when the user presses the Tab key.
browser.altClickSave controls whether clicking a link while holding the
alt key starts the download of that link.
browser.dom.window.dump.file redirects the ouput of
window.dump() calls to a file whose address is specified in this preference if
browser.dom.window.dump.enabled is set to
true. Changes require an application restart.
browser.download.lastDir.savePerSite controls whether the directory preselected in the file picker for saving a file download is being remembered on a per-website (host) base. If set to
true, the data is stored as content preference.
browser.pagethumbnails.capturing_disabled controls whether the application creates screenshots of visited pages which will be shown if the web page is shown in the grid of the "New Tab Page" (about:newtab) which offers the most often visited pages for fast navigation.
browser.search.context.loadInBackground controls whether a search from the context menu with "
Search <search engine> for <selected text>" opening a new tab will give focus to it and load it in the foreground or keep focus on the current tab and open it in the background.
browser.urlbar.formatting.enabled controls whether the domain name including the top level domain is highlighted in the address bar by coloring it black and the other parts grey.
browser.urlbar.trimURLs controls whether the protocol
http and the trailing slash behind domain name (if the open page is exactly the domain name) are hidden.
dom.event.clipboardevents.enabled lets websites get notifications if the user copies, pastes, or cuts something from a web page, and it lets them know which part of the page had been selected. The emitting of the
onpaste events are controlled by this preference.
nglayout.debug.disable_xul_fastload controls whether or not XUL fastload is used.
reader.parse-on-load.force-enabled controls if the reader mode used in Firefox Mobile should be enabled independent of the memory available in the device. By default, the reader mode in Firefox Mobile is only enabled if the memory is greater than 384MB.
ui.alertNotificationOrigin controls the position and direction from which popup notifications invoked by nsIAlertsService are sliding in.
ui.SpellCheckerUnderline holds the colour which is used to underline words not recognized by the spellchecker.
ui.SpellCheckerUnderlineStyle holds the style which is used to underline words not recognized by the spellchecker.
ui.textSelectBackground saves the color in which the background of a text selection in the user interface or in content will be styled.
ui.textSelectForeground saves the color in which the text of a text selection in the user interface or the content will be styled.
ui.tooltipDelay stores the delay in milliseconds between the mouse stopping over an element and the appearing of its tooltip.
view_source.syntax_highlight controls whether markup in the view source view is syntax highlighted.