@@ -19,7 +19,7 @@ data. In the directory *pyOPALTools/opal/test/* you can find several notebooks t
## Direct Usage
It is recommended to create a Python virtual environment where you install all necessary Python packages:
It is recommended to create a [Python virtual environment](https://gitlab.psi.ch/OPAL/pyOPALTools/wikis/python-virtual-environment) where you install all necessary Python packages: