===== HFileHierarchy =====
//Classifier plugin for generating hierarchical classifications based on a 
supplementary structure file.//
        
The following table lists all of the configuration options available for HFileHierarchy. 

^Option^Description^Value^
^//HFileHierarchy Options//^^^
| **metadata** |(REQUIRED) A single metadata field, or a comma separated list of metadata fields, used for classification. If a list is specified, the first metadata type that has values will be used. May be used in conjunction with the -firstvalueonly and -allvalues flags, to select only the first value, or all metadata values from the list. |  |
| **firstvalueonly** |Use only the first metadata value found. |  |
| **allvalues** |Use all metadata values found. |  |
| **hfile** |Use the specified classification structure file. |  |
| **sort** |Metadata field to sort leaf nodes by. Leaves will not be sorted if not specified. |  |
| **reverse_sort** |Sort leaf nodes in reverse order (use with -sort). |  |
| **hlist_at_top** |Display the first level of the classification horizontally. |  |
| **documents_last** |Display document nodes after classifier nodes. |  |
^//Options Inherited from [[BaseClassifier]]//^^^
| **buttonname** |The label for the classifier screen and button in navigation bar. The default is the metadata element specified with -metadata. |  |
| **no_metadata_formatting** |Don't do any automatic metadata formatting (for sorting.) |  |
| **builddir** |Where to put the built indexes. |  |
| **outhandle** |The file handle to write output to. |//Default: STDERR//  |
| **verbosity** |Controls the quantity of output. 0=none, 3=lots. |//Default: 2//  |