Cleaning up lpxclient and lpxserver in preparation for redirect implementation

luprex/cpp/core/printbuffer.hpp

@@ -173,12 +173,13 @@ public:
     bool have_prints(const PrintBuffer *pb) const;
 
     // Copy any new lines from the printbuffer to the stream buffer.
-    // Update the current line number.  Return true if the printbuffer
-    // contains any lines that have already been channeled.
+    // Update the current line number.  Return true if any data
+    // was channeled.
     bool channel(const PrintBuffer *pb, StreamBuffer *sb);
 
     // Generate an invocation that removes unnecessary lines from the
-    // printbuffer.
+    // printbuffer.  You should only do this if you just channeled
+    // some new output.
     Invocation invocation(int64_t actor_id);
 };