[fpc-pascal]Understanding the compiler sources

[Holger Peters]

Hi,
I want to understand how a compiler works. So I thought I could search a
little open source Compiler (FreePascal is very big and I think I had a
better overview with a smaller one).
So I decided to understand FreePascal. I found „Free Pascal 1.0.x
Internal documentation version 1.0“ on freepascal.org.

Should I work through it from the beginning to the end?
Or are there any other suggestions?

Ciao,
Holger