[fpc-pascal] Sample unit code

[Francisco Reyes]

Michael Van Canneyt writes:

> I'll add more examples.

Thanks.
I will also go over the existing unit documentation and send you some 
thoughts and suggestions from a newbie's point of view. Often what is clear 
to an experienced developer is not so clear for a newcomer. 

> All Free Pascal sources are made up of units. That should yield something ? :-)

I am going to have to download the sources from the site. Both my OpenSuse 
and FreeBSD installs only have the binaries for the units. That was the very 
first thing I tried.

Still going over the contributed units. Even though I am finding many broken 
links sooner or later I will bump into one that should help me understand 
the basic structure of a unit.