return {
	aria_label = 'Navbox',
	nowrap_item = '%s<span class="nowrap">%s</span>',
	templatestyles = mw.getCurrentFrame():extensionTag{
		name = 'templatestyles', args = { src = 'Module:Navbox/styles.css' }
	},
	hlist_templatestyles = 'Hlist/styles.css',
	plainlist_templatestyles = 'Plainlist/styles.css',
	-- do not localize marker table
	marker = {
		oddeven = '\127_ODDEVEN_\127',
		restart = '\127_ODDEVEN0_\127',
		regex = '\127_ODDEVEN(%d?)_\127'
	},
	category = {
		orphan = '[[Category:Navbox orphans]]',
		horizontal_lists = 'Navigational boxes without horizontal lists',
		background_colors = 'Navboxes using background colours',
		illegible = 'Potentially illegible navboxes',
		borders = 'Navboxes using borders',
	},
	keyword = {
		border_subgroup = 'subgroup',
		border_child = 'child',
		border_none = 'none',
		evenodd_swap = 'swap',
		navbar_off = 'off',
		navbar_plain = 'plain',
		nocat_false = 'false',
		nowrapitems_yes = 'yes',
		orphan_yes = 'yes',
		state_collapsed = 'collapsed',
		state_off = 'off',
		state_plain = 'plain',
		subpage_doc = 'doc',
		subpage_sandbox = 'sandbox',
		subpage_testcases = 'testcases',
		tracking_no = 'no'
	},
	class = {
		autocollapse = 'autocollapse',
		collapsible = 'mw-collapsible',
		collapsed = 'mw-collapsed',
		-- Warning
		navbox = 'navbox', -- WMF currently hides 'navbox' from mobile,
		-- so you probably shouldn't change the navbox class.
		navbox_abovebelow = 'navbox-abovebelow',
		navbox_group = 'navbox-group',
		navbox_image = 'navbox-image',
		navbox_inner = 'navbox-inner',
		navbox_list = 'navbox-list',
		navbox_list_with_group = 'navbox-list-with-group',
		navbox_part = 'navbox-', -- do not l10n
		navbox_styles = 'navbox-styles',
		navbox_subgroup = 'navbox-subgroup',
		navbox_title = 'navbox-title', -- l10n only if you change pattern.navbox_title below
		navbox_odd_part = 'odd', -- do not l10n
		navbox_even_part = 'even', -- do not l10n
		nomobile = 'nomobile',
		nowraplinks = 'nowraplinks',
		noviewer = 'noviewer' -- used to remove images from MediaViewer
	},
	pattern = {
		listnum = '^list(%d+)$',
		class = 'class',
		sandbox = '/sandbox$',
		navbox = 'Template:Navbox',
		nowrap = '^<span class="nowrap">',
		style = 'style$',
		navbox_title = '<th[^>]*"navbox%-title"',
		hlist = 'hlist',
		plainlist = 'plainlist',
	},
	arg = {
		above = 'above',
		aboveclass = 'aboveclass',
		abovestyle = 'abovestyle',
		basestyle = 'basestyle',
		bodyclass = 'bodyclass',
		bodystyle = 'bodystyle',
		border = 'border',
		below = 'below',
		belowclass = 'belowclass',
		belowstyle = 'belowstyle',
		evenodd = 'evenodd',
		evenstyle = 'evenstyle',
		group1 = 'group1',
		group2 = 'group2',
		group_and_num = 'group%d',
		groupstyle_and_num = 'group%dstyle',
		groupclass = 'groupclass',
		groupstyle = 'groupstyle',
		groupwidth = 'groupwidth',
		innerstyle = 'innerstyle',
		image = 'image',
		imageclass = 'imageclass',
		imageleft = 'imageleft',
		imageleftstyle = 'imageleftstyle',
		imagesetyle = 'imagestyle',
		list_and_num = 'list%d',
		listclass_and_num = 'list%dclass',
		liststyle_and_num = 'list%dstyle',
		list1padding = 'list1padding',
		listclass = 'listclass',
		listpadding = 'listpadding',
		liststyle = 'liststyle',
		name = 'name',
		navbar = 'navbar',
		navboxclass = 'navboxclass',
		nocat = 'nocat',
		nowrapitems = 'nowrapitems',
		oddstyle = 'oddstyle',
		orphan = 'orphan',
		state = 'state',
		style = 'style',
		templatestyles = 'templatestyles',
		child_templatestyles = 'child templatestyles',
		title = 'title',
		titleclass = 'titleclass',
		titlestyle = 'titlestyle',
		tracking = 'tracking'
	},
	-- names of navbar arguments
	navbar = {
		name = 1,
		fontstyle = 'fontstyle',
		mini = 'mini'
	}
}