Help - Glossary - V - Virtual Machine
The Squeak.exe loads a Squeak Image and starts a Virtual Machine. This is a part of the Squeak Environment that mediates between the code running inside the Squeak environment and the processor (i.e. hardware), and that - figuratively speaking - helps precook code for the processor. It is worked with so-called Primitives, that are written in C (or in a part of Squeak that translates Squeak code to C), and that can be called from ordinary Squeak code.
Glossary - V