Index: trunk/psModules/src/objects/pmModel.h
===================================================================
--- trunk/psModules/src/objects/pmModel.h	(revision 21516)
+++ trunk/psModules/src/objects/pmModel.h	(revision 25738)
@@ -44,4 +44,12 @@
 } pmModelOpMode;
 
+/// Parameter limit types
+typedef enum {
+    PM_MODEL_LIMITS_NONE,               ///< Apply no limits: suitable for debugging
+    PM_MODEL_LIMITS_IGNORE,             ///< Ignore all limits: fit can go to town
+    PM_MODEL_LIMITS_LAX,                ///< Lax limits: attempting to reproduce mildly bad data
+    PM_MODEL_LIMITS_STRICT,             ///< Strict limits: good quality data
+} pmModelLimitsType;
+
 typedef struct pmModel pmModel;
 typedef struct pmSource pmSource;
@@ -74,4 +82,7 @@
 //  This function returns the success / failure status of the given model fit
 typedef bool (*pmModelFitStatusFunc)(pmModel *model);
+
+//  This function sets the parameter limits for the given model
+typedef bool (*pmModelSetLimitsFunc)(pmModelLimitsType type);
 
 /** pmModel data structure
@@ -108,4 +119,5 @@
     pmModelParamsFromPSF modelParamsFromPSF;
     pmModelFitStatusFunc modelFitStatus;
+    pmModelSetLimitsFunc modelSetLimits;
 };
 
@@ -151,5 +163,5 @@
     pmModel *model,                     ///< The input pmModel
     pmModelOpMode mode,                 ///< mode to control how the model is added into the image
-    psImageMaskType maskVal		///< Value to mask
+    psImageMaskType maskVal             ///< Value to mask
 );
 
@@ -169,5 +181,5 @@
     pmModel *model,                     ///< The input pmModel
     pmModelOpMode mode,                 ///< mode to control how the model is added into the image
-    psImageMaskType maskVal		///< Value to mask
+    psImageMaskType maskVal             ///< Value to mask
 );
 
@@ -202,4 +214,14 @@
 );
 
+
+/// Set the model parameter limits for the given model
+///
+/// Wraps the model-specific pmModelSetLimitsFunc function.
+bool pmModelSetLimits(
+    const pmModel *model,               ///< Model of interest
+    pmModelLimits type                  ///< Type of limits
+    );
+
+
 /// @}
 # endif /* PM_MODEL_H */