Index: trunk/ppImage/src/ppImageOptions.c
===================================================================
--- trunk/ppImage/src/ppImageOptions.c	(revision 41382)
+++ trunk/ppImage/src/ppImageOptions.c	(revision 41918)
@@ -109,5 +109,5 @@
     options->patternRowIter     = 0;       // Clipping iterations
     options->patternRowRej      = NAN;     // Clipping rejection threshold
-    options->patternRowThresh   = NAN;     // Threshold for ignoring pixels
+    options->patternRowThresh   = NAN;     // Threshold for ignoring pixels (pixels with counts > median + thresh * stdev are ignored)
     options->patternRowMean     = PS_STAT_NONE; // Statistic for mean
     options->patternRowStdev    = PS_STAT_NONE; // Statistic for standard deviation