Index: trunk/psphot/doc/psphot.txt
===================================================================
--- trunk/psphot/doc/psphot.txt	(revision 4115)
+++ trunk/psphot/doc/psphot.txt	(revision 4954)
@@ -1,5 +1,38 @@
 
-psphot is a stand-alone program which implements the Pan-STARRS IPP
-object detection and analysis functions for using with individual
-images.  
+Defined APIs:
 
+pmMoments	    *pmMomentsAlloc();
+pmModel  	    *pmModelAlloc();
+pmSource 	    *pmSourceAlloc();
+psVector 	    *pmFindVectorPeaks()
+psArray  	    *pmFindImagePeaks()
+psList   	    *pmCullPeaks()
+pmSource 	    *pmSourceLocalSky()
+bool 		     pmSourceMoments()
+pmPSFClump 	     pmSourcePSFClump()
+bool 		     pmSourceRoughClass()
+bool 		     pmSourceSetPixelsCircle()
+pmModel 	    *pmSourceModelGuess()
+psArray 	    *pmSourceContour()
+bool 		     pmSourceFitModel()
+bool 		     pmSourceAddModel()
+bool 		     pmSourceSubModel()
+int                  pmModelParameterCount ();
+char                *pmModelGetType ();
+pmModelType          pmModelSetType ();
+pmModelFunc          pmModelFunc_GetFunction ();
+pmModelFlux          pmModelFlux_GetFunction ();
+pmModelRadius        pmModelRadius_GetFunction ();
+pmModelLimits        pmModelLimits_GetFunction ();
+pmModelGuessFunc     pmModelGuessFunc_GetFunction ();
+pmModelFromPSFFunc   pmModelFromPSFFunc_GetFunction ();
+pmModelFitStatusFunc pmModelFitStatusFunc_GetFunction ();
+
+model function abstractions:
+  typedef psMinimizeLMChi2Func pmModelFunc;
+  typedef psF64 (*pmModelFlux)(const psVector *params);
+  typedef psF64 (*pmModelRadius)(const psVector *params, double flux);
+  typedef bool (*pmModelLimits)(psVector **beta_lim, psVector **params_min, psVector **params_max);
+  typedef bool (*pmModelGuessFunc)(pmModel *model, pmSource *source);
+  typedef bool (*pmModelFromPSFFunc)(pmModel *modelPSF, pmModel *modelFLT, pmPSF *psf);
+  typedef bool (*pmModelFitStatusFunc)(pmModel *model);