-# Sherlock use regions based image comparision to search similar images.
-# To enable this feature, enable imagesig analyser to extract
-# various regions features needed for comparisions. Sets of these features
-# are called "image signature" and there are stored in attributes 'H'.
+# Sherlock use regions based image comparision to find similar images.
+# First of all imagesim analyser extracts various regions features
+# needed for comparisions. Sets of these features are called
+# "image signatures" and they are stored in attributes 'H'.