Add TRExFitter interface to docs

docs/index.rst

@@ -10,7 +10,6 @@
    Introduction <self>
    why
    GettingStarted.ipynb
-   Settings
    interfaces
    CommandLineTool
 

docs/interfaces.rst

@@ -101,3 +101,16 @@ Embed plots with:
 
     \includeuhepp{1.0}{a378d2b0-cde2-4266-be9b-85945d94880d}
 
+
+TRExFitter
+----------
+
+The ATLAS software `TRExFitter <https://trexfitter-docs.web.cern.ch/trexfitter-docs/>`_ 
+provides the configuration option `UheppFormat` which,
+if set to `TRUE`, will trigger the generation of pre- and post-fit plots in signal, 
+control and validation regions in uhepp format. The output is a YAML file which can be
+managed by the Python package `uhepp` or the command-line tool `uhepp`. A common
+use pattern is to push generated files to `uhepp.org <https://uhepp.org/>`_.
+
+Consult the `TRExFitter documentation
+<https://trexfitter-docs.web.cern.ch/trexfitter-docs/interfacing_tools/uhepp/>`_ for further information. 

docs/requirements.txt

-Sphinx
-sphinx_rtd_theme
-nbsphinx
+Sphinx~=4.20
+sphinx_rtd_theme~=1.0.0
+nbsphinx~=0.8.2

uhepp/__init__.py

@@ -2597,7 +2597,7 @@ class UHeppHist(UHepPlotModel):
         fig.show()
 
 def pull(uuid, api_url=None, api_key=None, full_link=None):
-    """Retrieve a :class:`UHepPlot` from a central server"""
+    """Retrieve a :class:`UHeppPlot` from a central server"""
     if api_key is None:
         api_key = os.environ.get("UHEPP_TOKEN", None)