Quiz #9

• Analyse these signs...


            


- Upper row from the left to the right:

1. the arrow is an index pointing to a direction. If you don't understand english you'll
    still understand the index sign.
2. 'a man shuffling sand'-sign is an icon showing the exact action.
3. a symbol which has to be interpreted. I don't know the meaning.
4. 'P' is a symbol and the crossed circle an index.