Analog Functions

Projects Programming
1

I don't understand these 3 functions:

http://arduino.cc/en/Reference/AnalogRead

I am confused.

2

I am confused.

In what way? What don't you understand?

3

Well what do they do?

4

The first two are related, but have nothing at all to do with the third.

Reference sets the limits of the input conversion, and read, well, performs a read.

Write isn't an analogue operation at all.

The reference pages describe what they all do.
What don't you understand about them?