--- a/src/Doc/System/Basics.thy Thu Mar 14 14:25:55 2013 +0100
+++ b/src/Doc/System/Basics.thy Thu Mar 14 16:49:36 2013 +0100
@@ -221,6 +221,13 @@
automatically obtained by composing the values of @{setting
ML_SYSTEM}, @{setting ML_PLATFORM} and the Isabelle version values.
+ \item[@{setting_def ISABELLE_POLYML}@{text "\<^sup>*"}] is @{verbatim true}
+ for @{setting ML_SYSTEM} values derived from Poly/ML, as opposed to
+ SML/NJ where it is empty. This is particularly useful with the
+ build option @{system_option condition}
+ (\secref{sec:system-options}) to restrict big sessions to something
+ that SML/NJ can still handle.
+
\item[@{setting_def ISABELLE_JDK_HOME}] needs to point to a full JDK
(Java Development Kit) installation with @{verbatim javac} and
@{verbatim jar} executables. This is essential for Isabelle/Scala