This should create a directory *lmgc90_user* which will contain the following subdirectories:
Then uncompress the downloaded archive wherever you want on your system. This should create a directory *lmgc90_user* which will contain the following subdirectories:
**src* : the sources of LMGC90 software
**examples* : the user examples working with the sources
**manuals* : a list of manuals/documentation for the software in pdf format
**docs* : the html documentation generated from the sources
**build* : (Windows only) the pre-compiled version of LMGC90
## <a name=updating>Updating</a> ##
If you modified some of the files (for instance the notebook), you must put them back in their original state
before updating them. So if you want to keep your modifications, you must first rename those files.
To get the list of modified files you can either use a graphical interface of Git, or in the terminal, after
going to the right directory (in Windows you can just right-click in the `lmgc90_user` directory and select `open with Git BASH`),