Number of files in zipped file archive compared to model folder

When I Zip a model, there are fewer files in the Zip archive than in the model folder. Why?


The Zip archive contains everything that is needed to re-make the entire model.

When you use the Zip option within the software:


The zip routine is quite clever – it extracts just what it needs to re-create a model. Some of the files are only required when the program is run, so there is no need to include them in the zip archive, as they will automatically be re-made. This enables the zip file to be quite small, which is convenient when emailing a model to someone.

So if you unzip a model, and run the software, you will find that the entire model is there.