It's good, when single object explains all essense
of icon. However, sometimes it's very hard to explain icon by one object, or
we can make icon very complicated for easely understanding.
For example, we have few icons, which mean action with some object: "create
folder", "delete folder", "move folder" and other. In
situation, where we have actions only with folders, it will be rationally to
make icons only by action ("create", "delete", "move"),
but very often in one composition there are icons with the same action for another
objects (example: for documents). It seems confuse.
There are two ways: if we have little icon set with big sizes, then we can make unique artistically images for each action. But when we have huge icon set and composition with a lot of icons, then it's important to make it in order to minimize objects. It will be like that: icon "create folder" will contain of symbols "folder" and "create" near of it, icon "delete folder" — "folder" and "delete", "move folder" — "folder" and "move". Then user will understand symbol "create", in other icon "create document" and he will understand that it means "creation" of document.
www.icojoy.com | Zhebrakov Andrew (Andy-S)