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+orcus-gnumeric
+==============
+
+Usage
+-----
+
+.. code-block::
+
+   orcus-gnumeric [options] FILE
+
+The FILE must specify a path to an existing file.
+
+Options
+-------
+
+- ``-h [ --help ]``
+
+  Print this help.
+
+- ``-d [ --debug ]``
+
+  Turn on a debug mode and optionally specify a debug level in order to generate run-time debug outputs.
+
+- ``-r [ --recalc ]``
+
+  Re-calculate all formula cells after the documetn is loaded.
+
+- ``-e [ --error-policy ] arg (=fail)``
+
+  Specify whether to abort immediately when the loader fails to parse the first formula cell ('fail'), or skip the offending cells and continue ('skip').
+
+- ``--dump-check``
+
+  Dump the content to stdout in a special format used for content verification in automated tests.
+
+- ``-o [ --output ] arg``
+
+  Output directory path, or output file when --dump-check option is used.
+
+- ``-f [ --output-format ] arg``
+
+  Specify the output format. Supported format types are:
+  
+    - check - Flat format that fully encodes document content. Suitable for automated testing.
+    - csv - CSV format.
+    - debug-state - This format dumps the internal state of the document in detail, useful for debugging.
+    - flat - Flat text format that displays document content in grid.
+    - html - HTML format.
+    - json - JSON format.
+    - none - No output to be generated. Maybe useful during development.
+    - xml - This format is currently unsupported.
+    - yaml - This format is currently unsupported.
+
+- ``--row-size arg``
+
+  Specify the number of maximum rows in each sheet.
+