diff --git a/docs/conf.py b/docs/conf.py
index ea7f8a02d..7b66c26f6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -20,15 +20,14 @@
 # Updated documentation of the configuration options is available at
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
 
-import sys, os
+from sys import path as sys_path
 from pathlib import Path
 
 from tabulate import tabulate
 
 ROOT = Path(__file__).resolve().parent
 
-#sys.path.insert(0, os.path.abspath('.'))
-sys.path.insert(0, str(ROOT))
+sys_path.insert(0, str(ROOT))
 
 from changes import generate_changes_inc
 
@@ -69,6 +68,7 @@
 extensions = [
     'sphinx.ext.extlinks',
     'sphinx.ext.intersphinx',
+    "sphinxcontrib.autoprogram",
     'sphinx_verilog_domain',
     'sphinxcontrib.bibtex',
     'myst_parser'
diff --git a/docs/f4pga/Reference.rst b/docs/f4pga/Reference.rst
new file mode 100644
index 000000000..396f9f76c
--- /dev/null
+++ b/docs/f4pga/Reference.rst
@@ -0,0 +1,6 @@
+Reference
+#########
+
+.. autoprogram:: f4pga.cli:CLI().MainParser
+  :prog: f4pga
+  :groups:
diff --git a/docs/index.rst b/docs/index.rst
index 4ef3e126d..16a2a5ca2 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -66,6 +66,7 @@ Table of Contents
   f4pga/Usage
   f4pga/modules/index
   f4pga/DevNotes
+  f4pga/Reference
   f4pga/Deprecated
 
 
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 44c25a31f..1398ef3ff 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,8 @@
+-r ../f4pga/requirements.txt
 myst-parser
 pyyaml
 sphinx>=4.5.0
+sphinxcontrib-autoprogram
 sphinxcontrib-bibtex
 https://github.com/f4pga/sphinx_f4pga_theme/archive/f4pga.zip#sphinx-f4pga-theme
 https://github.com/SymbiFlow/sphinx-verilog-domain/archive/master.zip#sphinx-verilog-domain
diff --git a/f4pga/cli.py b/f4pga/cli.py
new file mode 100644
index 000000000..6ef7828d3
--- /dev/null
+++ b/f4pga/cli.py
@@ -0,0 +1,228 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2022 F4PGA Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from pyAttributes.ArgParseAttributes import (
+    ArgParseMixin,
+    ArgumentAttribute,
+    Attribute,
+    CommandAttribute,
+    CommonSwitchArgumentAttribute,
+    DefaultAttribute,
+    SwitchArgumentAttribute,
+)
+
+
+class CLI(ArgParseMixin):
+    HeadLine = "FOSS Flows For FPGA (F4PGA) command-line tool"
+
+    def __init__(self):
+        import argparse
+        import textwrap
+
+        # Call constructor of the main interitance tree
+        super().__init__()
+        # Call constructor of the ArgParseMixin
+        ArgParseMixin.__init__(
+            self,
+            description=textwrap.dedent(
+                """
+                Long description...
+                """
+            ),
+            epilog=textwrap.fill("Happy hacking!"),
+            formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+            add_help=False,
+        )
+
+    def PrintHeadline(self):
+        print("{line}".format(line="=" * 80))
+        print("{headline: ^80s}".format(headline=self.HeadLine))
+        print("{line}".format(line="=" * 80))
+
+    @CommonSwitchArgumentAttribute(
+        "-n",
+        "--noexec",
+        dest="noexec",
+        help="Print commands but do not execute them.",
+        default=False,
+    )
+    def Run(self):
+        ArgParseMixin.Run(self)
+
+    @DefaultAttribute()
+    def HandleDefault(self, args):
+        self.PrintHeadline()
+        self.MainParser.print_help()
+
+    @CommandAttribute("help", help="Display help page(s) for the given command name.")
+    @ArgumentAttribute(
+        dest="Command",
+        type=str,
+        nargs="?",
+        help="Print help page(s) for a command.",
+    )
+    def HandleHelp(self, args):
+        if args.Command == "help":
+            print("This is a recursion ...")
+            return
+        if args.Command is None:
+            self.PrintHeadline()
+            self.MainParser.print_help()
+        else:
+            try:
+                self.PrintHeadline()
+                self.SubParsers[args.Command].print_help()
+            except KeyError:
+                print("command {0} is unknown.".format(args.Command))
+
+    @CommandAttribute(
+        "analysis",
+        help="???.",
+        description="???."
+    )
+    def HandleAnalysis(self, args):
+        print("ANALYSIS!")
+
+    @CommandAttribute(
+        "synth",
+        help="???.",
+        description="???."
+    )
+    def HandleSynth(self, args):
+        print("SYNTH!")
+
+    @CommandAttribute(
+        "pack",
+        help="???.",
+        description="???."
+    )
+    def HandlePack(self, args):
+        print("PACK!")
+
+    @CommandAttribute(
+        "generate",
+        help="???.",
+        description="???."
+    )
+    def HandleGenerate(self, args):
+        print("GENERATE!")
+
+    # FIXME This is a subcommand of 'generate'
+    @CommandAttribute(
+        "constraints",
+        help="???.",
+        description="???."
+    )
+    def HandleGenerateConstraints(self, args):
+        print("GENERATE CONSTRAINTS!")
+
+    # FIXME This is a subcommand of 'generate'
+    @CommandAttribute(
+        "fasm2bels",
+        help="???.",
+        description="???."
+    )
+    def HandleGenerateFASM2Bells(self, args):
+        print("GENERATE FASM2BELLS!")
+
+    @CommandAttribute(
+        "write",
+        help="???.",
+        description="???."
+    )
+    def HandleWrite(self, args):
+        print("WRITE!")
+
+    # FIXME This is a subcommand of 'write'
+    @CommandAttribute(
+        "fasm",
+        help="???.",
+        description="???."
+    )
+    def HandleWriteFASM(self, args):
+        print("WRITE FASM!")
+
+    # FIXME This is a subcommand of 'write'
+    @CommandAttribute(
+        "bitstream",
+        help="???.",
+        description="???."
+    )
+    def HandleWriteBitstream(self, args):
+        print("WRITE BITSTREAM!")
+
+    # FIXME This is a subcommand of 'write'
+    @CommandAttribute(
+        "bitheader",
+        help="???.",
+        description="???."
+    )
+    def HandleWriteBitheader(self, args):
+        print("WRITE BITHEADER!")
+
+#    # FIXME This is a subcommand of 'write'
+#    @CommandAttribute(
+#        "fasm2bels",
+#        help="???.",
+#        description="???."
+#    )
+#    def HandleWriteFASM2Bells(self, args):
+#        print("WRITE FASM2BELLS!")
+
+    # FIXME This is a subcommand of 'write'
+    @CommandAttribute(
+        "jlink",
+        help="???.",
+        description="???."
+    )
+    def HandleWriteJlink(self, args):
+        print("WRITE JLINK!")
+
+    # FIXME This is a subcommand of 'write'
+    @CommandAttribute(
+        "openocd",
+        help="???.",
+        description="???."
+    )
+    def HandleWriteOpenOCD(self, args):
+        print("WRITE OPENOCD!")
+
+    @CommandAttribute(
+        "vpr",
+        help="???.",
+        description="???."
+    )
+    def HandleVPR(self, args):
+        print("VPR!")
+
+    @CommandAttribute(
+        "ql",
+        help="???.",
+        description="???."
+    )
+    def HandleQL(self, args):
+        print("QL!")
+
+
+def main():
+    CLI().Run()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/f4pga/requirements.txt b/f4pga/requirements.txt
index cdb1c2f53..1709cde01 100644
--- a/f4pga/requirements.txt
+++ b/f4pga/requirements.txt
@@ -1 +1,2 @@
 -r ./flows/requirements.txt
+pyAttributes