Principles - P7 FOSS

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 \item \label{principle:freesoftware}\textbf{Free and open source software:}
   Technically, reproducibility (defined in \ref{definition:reproduction}) is possible with non-free or non-open-source software (a black box).
-  This principle is thus necessary to complement the definition of reproducibility and has many advantages which are critical to the sciences and to industry:
-  1) The lineage, and its optimization, can be traced down to the internal algorithm in the software's source.
-  2) A free software package that may not execute on a particular piece hardware can be modified to work on it.
-  3) A non-free software project typically cannot be distributed by others, making the whole community reliant only on the owner's server (even if the proprietary software does not ask for payments).
+  This principle is thus necessary to characterize the many advantages that are critical to the sciences and to industry:
+  1) The lineage, and its optimization, can be traced to the internal algorithm in the software's source.
+  2) A free-software package that does not execute on particular hardware can be modified to work on it.
+  3) A non-free software project typically cannot be distributed by others, making the whole community reliant on the owner's server (even if the owner does not ask for payments).
 
   \emph{Comparison with existing:} The existing solutions listed above are all free software.
-  There are non-free solutions, but we do not consider them here because of this principle.
+  Based on this principle, we do not consider non-free solutions here.
 \end{enumerate}