WordPress/wp-includes/js/tinymce/langs/en.js

// UK lang variables

if (navigator.userAgent.indexOf('Mac OS') != -1) {
// Mac OS browsers use Ctrl to hit accesskeys
	var metaKey = 'Ctrl';
}
else {
	var metaKey = 'Alt';
}

tinyMCELang['lang_bold_desc'] = 'Bold (' + metaKey + '+b)';
tinyMCELang['lang_italic_desc'] = 'Italic (' + metaKey + '+i)';
tinyMCELang['lang_underline_desc'] = 'Underline';
tinyMCELang['lang_striketrough_desc'] = 'Striketrough (' + metaKey + '-d)';
tinyMCELang['lang_justifyleft_desc'] = 'Align left (' + metaKey + '-f)';
tinyMCELang['lang_justifycenter_desc'] = 'Align center (' + metaKey + '-c)';
tinyMCELang['lang_justifyright_desc'] = 'Align right (' + metaKey + '-r)';
tinyMCELang['lang_justifyfull_desc'] = 'Align full';
tinyMCELang['lang_bullist_desc'] = 'Unordered list (' + metaKey + '-l)';
tinyMCELang['lang_numlist_desc'] = 'Ordered list (' + metaKey + '-o)';
tinyMCELang['lang_outdent_desc'] = 'Outdent (' + metaKey + '-w)';
tinyMCELang['lang_indent_desc'] = 'Indent/Blockquote (' + metaKey + '-q)';
tinyMCELang['lang_undo_desc'] = 'Undo (' + metaKey + '-u)';
tinyMCELang['lang_redo_desc'] = 'Redo (' + metaKey + '-y)';
tinyMCELang['lang_link_desc'] = 'Insert/edit link (' + metaKey + '-a)';
tinyMCELang['lang_unlink_desc'] = 'Unlink (' + metaKey + '-s)';
tinyMCELang['lang_image_desc'] = 'Insert/edit image (' + metaKey + '-m)';
tinyMCELang['lang_cleanup_desc'] = 'Cleanup messy code';
tinyMCELang['lang_focus_alert'] = 'A editor instance must be focused before using this command.';
tinyMCELang['lang_edit_confirm'] = 'Do you want to use the WYSIWYG mode for this textarea?';
tinyMCELang['lang_insert_link_title'] = 'Insert/edit link';
tinyMCELang['lang_insert'] = 'Insert';
tinyMCELang['lang_update'] = 'Update';
tinyMCELang['lang_cancel'] = 'Cancel';
tinyMCELang['lang_insert_link_url'] = 'Link URL';
tinyMCELang['lang_insert_link_target'] = 'Target';
tinyMCELang['lang_insert_link_target_same'] = 'Open link in the same window';
tinyMCELang['lang_insert_link_target_blank'] = 'Open link in a new window';
tinyMCELang['lang_insert_image_title'] = 'Insert/edit image';
tinyMCELang['lang_insert_image_src'] = 'Image URL';
tinyMCELang['lang_insert_image_alt'] = 'Image description';
tinyMCELang['lang_help_desc'] = 'Help';
tinyMCELang['lang_bold_img'] = "bold.gif";
tinyMCELang['lang_italic_img'] = "italic.gif";
tinyMCELang['lang_underline_img'] = "underline.gif";
tinyMCELang['lang_clipboard_msg'] = 'Copy/Cut/Paste is not available in Mozilla and Firefox.\nDo you want more information about this issue?';
tinyMCELang['lang_popup_blocked'] = 'Sorry, but we have noticed that your popup-blocker has disabled a window that provides application functionality. You will need to disable popup blocking on this site in order to fully utilize this tool.';