Assets
While assets are not part of a style family, they can be made to be retrieved by
			the style family resource lookup algorithm. This works by putting them in a folder
			structure similar to the style family inside of Assets. See Resource lookup algorithms for more information. The supported assets for lookup
			are Custom.js, Custom.css and images. 
The same 
		Assets folder structure must be used in the style family
		folder as in its default location. For example, if an image file 
		plus.png resides in the 
		Images folder, and you want to use another version of it
		when the style family Infor/Lightness is used, the new 
		plus.png image file should be put in the 
		Infor/Lightness/Images folder. 
	 
The folder in which a style family folder is placed can be either the
		root of 
		Assets, a locale folder, or another style family folder
		(representing a style family that is part of a style family hierarchy). If an
		asset is both localized and using a style family, the locale folder must be the
		one in the root. 
	 
Again, assets are not part of a style family, so if you delete a style family, it will remove only user-defined styles, not assets. You must delete assets separately. Also, if you copy a style family, the copy will not include versions of asset files. If you copy an asset, you will get a copy of that one single file. If you want to copy a styled or localized asset, you must navigate to it and copy it separately. If you export a style family, assets are not exported. You must export them separately. Every asset is managed separately, including each styled and localized version. Each must be exported separately.