Visual Literacy

In the context of practice lecture we spoke about the meaning of visual literacy, and what it means internationally how we perceive visual communicative symbols and images. visual literacy is the ability to interpret, negotiate and make meaning from information presented in the form of an image. Its also based on the idea that pictures can be read by anyone internationally in general. 

All that is necessary for any language to exist is an agreement amongst a group of people that one thing will stand for another. For example:

A red cross (+) is the cultural image for first aid, but a green cross is internationally know for first aid.
Also shifting the colours and placement will change the meaning of the symbol e.g.