Doc expansion for sfs

docs/tools/parallel_sfs.rst

@@ -50,11 +50,11 @@ Command-line options for ``parallel_sfs``:
     computation benefit from parallelization.
 
 --prep-step <string (default: None)>
-    Run parallel_sfs twice, before mosaicking the final results. First time
+    Run ``parallel_sfs`` twice, before mosaicking the final results. First time
     add these options to the ``sfs`` program. Second time add the options in
     ``--main-step``. Must use this as ``--prep-step="options"``. Without the
-    equal sign it will fail to parse the options because of the Python
-    ``argparse`` module. See an example in :numref:`sfs_earth`.
+    equal sign it will fail to parse the options because of limitations of the
+    Python ``argparse`` module. See an example in :numref:`sfs_earth`.
 
 --main-step <string (default: None)>
     See: ``--prep-step``.

docs/tools/sfs.rst

@@ -396,6 +396,17 @@ Command-line options for sfs
     is on. The final haze values will be saved to ``<output
     prefix>-haze.txt``.
 
+--read-exposures
+    If set, read the image exposures with the current output prefix.
+    Useful with a repeat invocation. See the options ``--prep-step`` and
+    ``--main-step`` in ``parallel_sfs`` (:numref:`parallel_sfs`).
+
+--read-haze
+    If set, read the haze values with the current output prefix. See also ``--read-exposures``.
+
+--read-albedo
+    If set, read the computed albedo with the current output prefix. See also ``--read-exposures``.    
+
 --gradient-weight <float (default: 0.0)>
     The weight given to the cost function term which consists of sums
     of squares of first-order derivatives. A larger value will result

src/asp/Tools/parallel_sfs

@@ -241,7 +241,7 @@ def main(argsIn):
       help = 'Run parallel_sfs twice, before mosaicking the final results. First time '
       'add these options to the sfs program. Second time add the options in --main-step.'
       'Must use this as --prep-step="options". Without the equal sign it will fail '
-      'to parse the options because of of the Python argparse module.')
+      'to parse the options because of limitations of the Python argparse module.')
 
     parser.add_argument('--main-step', dest='main_step', default = None,
       help = 'See --prep-step.')