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+# fontTools Documentation
+
+The fontTools project documentation updates continuously on Read the Docs as the project source changes.  
+
+The documentation is hosted at https://fonttools.readthedocs.io/.
+
+## Contents
+
+- [How to Build Local Documentation](#how-to-build-local-documentation)
+- [Contributing to the fontTools Documentation](#contributing-to-the-documentation)
+- [Documentation License](#documentation-license)
+
+## How to Build Local Documentation
+
+### Install Dependencies
+
+You must have a Python 3 interpreter and the `pip` Python package manager installed on your system to build the fontTools documentation.
+
+Pull the fontTools project source files, create a Python virtual environment, and then install fontTools and the documentation build dependencies by executing the following commands in the root of the fontTools source repository:
+
+```
+$ pip install -e . [all]
+$ pip install -r Doc/docs-requirements.txt
+```
+
+### Build Documentation
+
+**With `make`**: execute the following command in the root of the repository:
+
+```
+$ make docs
+```
+
+**Without `make`**: execute the following command in the **`Doc` directory**:
+
+```
+$ sphinx-build -b html source build
+```
+
+Open the `Doc/build/html/index.html` file in your browser to view the documentation home page.
+
+## Contributing to the Documentation
+
+We highly encourage contributions!  Please follow the instructions below to improve the documentation.
+
+### Python Docstring Style
+
+We recommend the use of Python docstrings that follow [the Google Style Guide](https://github.com/google/styleguide/blob/gh-pages/pyguide.md#381-docstrings).  Our documentation build approach parses appropriately formatted docstrings into formatted documentation files.
+
+#### Function Documentation Example
+
+```python
+def fetch_bigtable_rows(big_table, keys, other_silly_variable=None):
+    """Fetches rows from a Bigtable.
+
+    Retrieves rows pertaining to the given keys from the Table instance
+    represented by big_table.  Silly things may happen if
+    other_silly_variable is not None.
+
+    Args:
+        big_table: An open Bigtable Table instance.
+        keys: A sequence of strings representing the key of each table row
+            to fetch.
+        other_silly_variable: Another optional variable, that has a much
+            longer name than the other args, and which does nothing.
+
+    Returns:
+        A dict mapping keys to the corresponding table row data
+        fetched. Each row is represented as a tuple of strings. For
+        example:
+
+        {'Serak': ('Rigel VII', 'Preparer'),
+         'Zim': ('Irk', 'Invader'),
+         'Lrrr': ('Omicron Persei 8', 'Emperor')}
+
+        If a key from the keys argument is missing from the dictionary,
+        then that row was not found in the table.
+
+    Raises:
+        IOError: An error occurred accessing the bigtable.Table object.
+    """
+```
+*Source: [Google Style Guide](https://github.com/google/styleguide/blob/gh-pages/pyguide.md) (CC BY-SA 3.0)*
+
+#### Class Documentation Example
+
+```python
+class SampleClass(object):
+    """Summary of class here.
+
+    Longer class information....
+    Longer class information....
+
+    Attributes:
+        likes_spam: A boolean indicating if we like SPAM or not.
+        eggs: An integer count of the eggs we have laid.
+    """
+
+    def __init__(self, likes_spam=False):
+        """Inits SampleClass with blah."""
+        self.likes_spam = likes_spam
+        self.eggs = 0
+
+    def public_method(self):
+        """Performs operation blah."""
+```
+*Source: [Google Style Guide](https://github.com/google/styleguide/blob/gh-pages/pyguide.md) (CC BY-SA 3.0)*
+
+### Build Local Documentation and Review Your Changes
+
+Build a local set of HTML documentation files with the instructions above and review your changes.
+
+### Submit a Pull Request
+
+Submit a Github pull request with your proposed improvements to the documentation.  
+
+Thanks for your contribution!
+
+## Documentation License
+
+The fontTools documentation is released under a [CC BY-SA 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/).