Proximity is the space between elements, and this concept can be used to group elements together that belongs together, or separate elements that should be separated. Sometimes elements can get a completely different meaning by just changing the proximity a little bit. The examples below are from a leaflet The Arena Theatre in Wolverhampton uses to inform visitors of upcoming performances. A little manipulation in photoshop lets me show what a little change in the leaflet can change the meaning of an element.
In the first example you can see how the original page looks:

If we then try to look at the elements were proximity is used to group things, we could look at the header and sub-header

If we then try to change the proximity and group the sub-header with the body text. The meaning of that sub header completely changes.




