diff --git a/Source/Processors/RecordEngine.h b/Source/Processors/RecordEngine.h
index 3ee7c1476..4aa8a2412 100644
--- a/Source/Processors/RecordEngine.h
+++ b/Source/Processors/RecordEngine.h
@@ -45,24 +45,92 @@ class RecordEngine : public AccessClass
 public:
     RecordEngine();
     ~RecordEngine();
-
+	/** All the public methods are called by RecordNode:
+	When acquisition starts (in the specified order):
+		1-resetChannels
+		2-registerProcessor, addChannel, registerSpikeSource, addspikeelectrode
+		3-startAcquisition
+	When recording starts (in the specified order):
+		1-directoryChanged (if needed)
+		2-openFiles
+	During recording:
+		writeData, writeEvent, writeSpike, updateTimeStamp
+	When recording stops:
+		closeFiles
+	*/
+
+	/** Called when recording starts to open all needed files
+	*/
     virtual void openFiles(File rootFolder, int experimentNumber, int recordingNumber) =0;
+	
+	/** Called when recording stops to close all files
+		and do all the necessary cleanups
+	*/
     virtual void closeFiles() =0;
+
+	/** Write continuous data.
+		This method gets the full data buffer, it must query getRecordState for
+		each registered channel to determine which channels to actually write to disk
+	*/
     virtual void writeData(AudioSampleBuffer& buffer, int nSamples) =0;
+
+	/** Write a single event to disk.
+	*/
     virtual void writeEvent(int eventType, MidiMessage& event, int samplePosition) =0;
-    virtual void addChannel(int index, Channel* chan) =0;
+	
+	/** Called when acquisition starts once for each processor that might record continuous data
+	*/
+	virtual void registerProcessor(GenericProcessor* processor);
+
+	/** Called after registerProcessor, once for each output
+		channel of the processor
+	*/
+	virtual void addChannel(int index, Channel* chan) =0;
+
+	/** Called when acquisition starts once for each processor that might record spikes
+	*/
+	virtual void registerSpikeSource(GenericProcessor* processor);
+
+	/** Called after registerSpikesource, once for each channel group
+	*/
     virtual void addSpikeElectrode(int index, SpikeRecordInfo* elec) =0;
+
+	/** Write a spike to disk
+	*/
     virtual void writeSpike(const SpikeObject& spike, int electrodeIndex) =0;
-    virtual void registerProcessor(GenericProcessor* processor);
-    virtual void registerSpikeSource(GenericProcessor* processor);
+
+	/** Called when a new acquisition starts, to clean all channel data 
+		before registering the processors
+	*/
     virtual void resetChannels();
+
+	/** Called every time a new timestamp event is received
+	*/
     virtual void updateTimeStamp(int64 timestamp);
+
+	/** Called after all channels and spike groups have been registered, 
+		just before acquisition starts
+	*/
     virtual void startAcquisition();
+
+	/** Called when the recording directory changes during an acquisition
+	*/
     virtual void directoryChanged();
 
 protected:
+	/** Functions to access RecordNode arrays and utilities
+	*/
+
+	/** Gets the specified channel from the channel array stored in RecordNode
+	*/
     Channel* getChannel(int index);
+
+	/** Gets the specified channel group info structure from the array stored in RecordNode
+	*/
     SpikeRecordInfo* getSpikeElectrode(int index);
+
+	/** Generate a Matlab-compatible datestring 
+	*/
     String generateDateString();
 
 private:
diff --git a/Source/Processors/RecordNode.h b/Source/Processors/RecordNode.h
index f78fedef2..b1efc776e 100755
--- a/Source/Processors/RecordNode.h
+++ b/Source/Processors/RecordNode.h
@@ -72,12 +72,18 @@ class RecordNode : public GenericProcessor,
     */
     void setParameter(int parameterIndex, float newValue);
 
+	/** Called by the processor graph for each processor that could record data
+	*/
     void registerProcessor(GenericProcessor* sourceNode);
+	/** Called by the processor graph for each recordable channel
+	*/
     void addInputChannel(GenericProcessor* sourceNode, int chan);
 
     bool enable();
     bool disable();
 
+	/** Get channel stored in channelPointers array
+	*/
     Channel* getDataChannel(int index);
 
     /** Called by the ControlPanel to determine the amount of space
@@ -113,14 +119,26 @@ class RecordNode : public GenericProcessor,
         return rootFolder;
     }
 
+	/** Adds a Record Engine to use
+	*/
     void registerRecordEngine(RecordEngine* engine);
 
+	/** Clears the list of active Record Engines
+	*/
 	void clearRecordEngines();
 
+	/** Must be called by a spike recording source on the "enable" method
+	*/
     void registerSpikeSource(GenericProcessor* processor);
 
+	/** Registers an electrode group for spike recording
+	Must be called by a spike recording source on the "enable" method
+	after the call to registerSpikeSource 
+	*/
     int addSpikeElectrode(SpikeRecordInfo* elec);
 
+	/** Called by a spike recording source to write a spike to file
+	*/
     void writeSpike(SpikeObject& spike, int electrodeIndex);
 
     SpikeRecordInfo* getSpikeElectrode(int index);