Where do I add oil for my ford focus?

Can anyone supply me with a clear picture with a nice big arrow saying "pour here" for adding oil to my 1.8 ford focus. It is getting close to the minimum mark and I'd like to add some before it gets much lower.
Cheers

The oil cap should look like this under the hoodWhere do I add oil for my ford focus

This type of information is found in the owner's manual.

The basics of driving is always check your oil and water and tyres if you haven't found out how to do these basic checks along with what to do when you find something needs adjusting like tyre pressures or filling you oil you should not be driving. In fact the new driving test you have to be able to KNOW how to do these things LEARN

Assuming it is a second-generation Focus 1.8 petrol (you don't say the age or fuel type) it is indicated by "D" on the diagram at http://www.fordmanuals.org/page-2589.html

For a 1.8 diesel see http://www.fordmanuals.org/page-2593.html

The cap is for adding oil and the dipstick shows you how full the engine is!

Read the index of the owners manual for the word OIL.