- Huge code documentation effort.

src/arachne.h

@@ -13,13 +13,17 @@ int isTriviallyKnownAtArachne (const System sys, const Term t, const int run,
 int isTriviallyKnownAfterArachne (const System sys, const Term t,
 				  const int run, const int index);
 
+//! Goal structure
+/**
+ * Signals a read event or claim event to which a term has to be bound.
+ */
 struct goalstruct
 {
-  int run;
-  int index;
-  Roledef rd;
+  int run;			//!< run of goal
+  int index;			//!< index of goal in the run
+  Roledef rd;			//!< pointer to the role definition
 };
 
-typedef struct goalstruct Goal;
+typedef struct goalstruct Goal;	//!< pointer to goal structure
 
 #endif