Index: trunk/ppImage/src/ppImageOptions.c
===================================================================
--- trunk/ppImage/src/ppImageOptions.c	(revision 38233)
+++ trunk/ppImage/src/ppImageOptions.c	(revision 41382)
@@ -53,4 +53,6 @@
     options->useVideoDark    = false;   // Use video dark if we can?
     options->useVideoMask    = false;   // Use video mask if we can?
+    options->doApplyPixelZero  = true;   // option for zero'ing pixels under masks
+
     // output files requested
     options->BaseFITS        = false;   // create output image
@@ -234,4 +236,6 @@
     options->doMaskBurntool  = psMetadataLookupBool(NULL, recipe, "MASK.BURNTOOL");
     options->doApplyBurntool = psMetadataLookupBool(NULL, recipe, "APPLY.BURNTOOL");
+    //TdB: read in switch for zero'ing pixels under masks
+    options->doApplyPixelZero = psMetadataLookupBool(NULL, recipe, "APPLY.PIXELZERO");
     options->doVarianceBuild = psMetadataLookupBool(NULL, recipe, "VARIANCE.BUILD");
     options->doAuxMask       = psMetadataLookupBool(NULL, recipe, "MASK.AUXMASK");
@@ -245,4 +249,5 @@
         }
     }
+
 
     // Mask recipe options (note that mask bit values are set in ppImageSetMaskBits.c)