3 files changed, 6 insertions, 1 deletions
diff --git a/src/object.h b/src/object.h
index 82598c58..70cbe999 100644
--- a/src/object.h
+++ b/src/object.h
@@ -27,6 +27,8 @@
 #include <boost/noncopyable.hpp>
 #include <string>
 
+class write_subtitle_test;
+
 namespace dcp {
 
 /** @class Object
@@ -45,6 +47,8 @@ public:
 	}
 
 protected:
+	friend class ::write_subtitle_test;
+	
 	/** ID */
 	std::string _id;
 };
diff --git a/src/subtitle_string.cc b/src/subtitle_string.cc
index a8dfd555..15131873 100644
--- a/src/subtitle_string.cc
+++ b/src/subtitle_string.cc
@@ -25,6 +25,7 @@ using std::ostream;
 using boost::optional;
 using namespace dcp;
 
+/** @param v_position Vertical position as a fraction of the screen height (between 0 and 1) from v_align */
 SubtitleString::SubtitleString (
 	optional<string> font,
 	bool italic,
diff --git a/src/subtitle_string.h b/src/subtitle_string.h
index 0f066164..966ae8cb 100644
--- a/src/subtitle_string.h
+++ b/src/subtitle_string.h
@@ -135,7 +135,7 @@ private:
 	int _size;
 	Time _in;
 	Time _out;
-	/** Vertical position as a proportion of the screen height from the top
+	/** Vertical position as a proportion of the screen height from the _v_align
 	 *  (between 0 and 1)
 	 */
 	float _v_position;