3 files changed, 20 insertions, 0 deletions
diff --git a/lv2/lv2plug.in/ns/ext/patch/lv2-patch.doap.ttl b/lv2/lv2plug.in/ns/ext/patch/lv2-patch.doap.ttl
index cf10aa6..34c091f 100644
--- a/lv2/lv2plug.in/ns/ext/patch/lv2-patch.doap.ttl
+++ b/lv2/lv2plug.in/ns/ext/patch/lv2-patch.doap.ttl
@@ -17,6 +17,8 @@
 		dcs:changeset [
 			dcs:item [
 				rdfs:label "Add patch:accept property."
+			] , [
+				rdfs:label "Add patch:context property."
 			]
 		]
 	] , [
diff --git a/lv2/lv2plug.in/ns/ext/patch/patch.h b/lv2/lv2plug.in/ns/ext/patch/patch.h
index e78164d..fed6a87 100644
--- a/lv2/lv2plug.in/ns/ext/patch/patch.h
+++ b/lv2/lv2plug.in/ns/ext/patch/patch.h
@@ -48,6 +48,7 @@
 #define LV2_PATCH__accept         LV2_PATCH_PREFIX "accept"          ///< http://lv2plug.in/ns/ext/patch#accept
 #define LV2_PATCH__add            LV2_PATCH_PREFIX "add"             ///< http://lv2plug.in/ns/ext/patch#add
 #define LV2_PATCH__body           LV2_PATCH_PREFIX "body"            ///< http://lv2plug.in/ns/ext/patch#body
+#define LV2_PATCH__context        LV2_PATCH_PREFIX "context"         ///< http://lv2plug.in/ns/ext/patch#context
 #define LV2_PATCH__destination    LV2_PATCH_PREFIX "destination"     ///< http://lv2plug.in/ns/ext/patch#destination
 #define LV2_PATCH__property       LV2_PATCH_PREFIX "property"        ///< http://lv2plug.in/ns/ext/patch#property
 #define LV2_PATCH__readable       LV2_PATCH_PREFIX "readable"        ///< http://lv2plug.in/ns/ext/patch#readable
diff --git a/lv2/lv2plug.in/ns/ext/patch/patch.ttl b/lv2/lv2plug.in/ns/ext/patch/patch.ttl
index 79ada4e..71c51a3 100644
--- a/lv2/lv2plug.in/ns/ext/patch/patch.ttl
+++ b/lv2/lv2plug.in/ns/ext/patch/patch.ttl
@@ -295,6 +295,23 @@ patch:body
 The details of this property's value depend on the type of message it is a
 part of.""" .
 
+patch:context
+	a rdf:Property ,
+		owl:ObjectProperty ;
+	rdfs:domain patch:Message ;
+	rdfs:comment """The context of properties in this message.
+
+For example, a plugin may have a special context for ephemeral properties which
+are only relevant during the lifetime of the instance and should not be saved
+in state.
+
+The specific uses for contexts are application specific.  However, the context
+MUST be a URI, and can be interpreted as the ID of a data model where
+properties should be stored.  Implementations MAY have special support for
+contexts, for example by storing in a quad store or serializing to a format
+that supports multiple RDF graphs such as TriG.
+""" .
+
 patch:destination
 	a rdf:Property ,
 		owl:ObjectProperty ,