faq.markdown

+# Frequently Asked Question #
+
+
+What is the license of this software ?
+
+This software is distributed under the [Free Software CECILL License]()
+
+
+On which OS does it work ?
+
+Currently it workson UNIX OS (Linux, Solaris, MacOSX, etc). Concerning Windows users, we suggest to install a
+Linux virtual machine through virtualbox for example.
+
+
+What is needed to install ?
+
+Please read the [README.md](https://git-xen.lmgc.univ-montp2.fr/lmgc90/lmgc90_user/tree/master) file.
+
+I get the message "ImportError: No module named pylmgc90" when running an example, what is wrong ?
+
+Python did not find the module with lmgc90. If the path to your build directory is *my_build_path*,
+then make sure your ```PYTHONPATH``` environment variable is correctly set with:
+```shell
+export PYTHONPATH=my_build_path
+```
+or that you add the path inside your command script with the two lines:
+```python
+import sys
+sys.path.append("my_build_path")
+```
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