doc-src/System/Thy/document/Basics.tex

   interaction with the Proof General user interface, and the
   \verb|-X| option enables XML-based PGIP communication.  The
   \verb|-W| option makes Isabelle enter a special process
   wrapper for interaction via an external program; the protocol is a
   stripped-down version of Proof General the interaction mode, see
-  also \hyperlink{file.~~/src/Pure/Tools/isabelle-process.ML}{\mbox{\isa{\isatt{{\isachartilde}{\isachartilde}{\isacharslash}src{\isacharslash}Pure{\isacharslash}Tools{\isacharslash}isabelle{\isacharunderscore}process{\isachardot}ML}}}} and \hyperlink{file.~~/src/Pure/Tools/isabelle-process.scala}{\mbox{\isa{\isatt{{\isachartilde}{\isachartilde}{\isacharslash}src{\isacharslash}Pure{\isacharslash}Tools{\isacharslash}isabelle{\isacharunderscore}process{\isachardot}scala}}}}.
+  also \hyperlink{file.~~/src/Pure/System/isabelle-process.ML}{\mbox{\isa{\isatt{{\isachartilde}{\isachartilde}{\isacharslash}src{\isacharslash}Pure{\isacharslash}System{\isacharslash}isabelle{\isacharunderscore}process{\isachardot}ML}}}} and \hyperlink{file.~~/src/Pure/System/isabelle-process.scala}{\mbox{\isa{\isatt{{\isachartilde}{\isachartilde}{\isacharslash}src{\isacharslash}Pure{\isacharslash}System{\isacharslash}isabelle{\isacharunderscore}process{\isachardot}scala}}}}.
 
   \medskip The \verb|-S| option makes the Isabelle process more
   secure by disabling some critical operations, notably runtime
   compilation and evaluation of ML source code.%
 \end{isamarkuptext}%