Simplify settings help message (#1052)

* reducing verbosity

* simplifying supported option specs

* clarifying settings wording

* add generate_radial_network as option

openfecli/parameters/plan_network_options.py

@@ -182,21 +182,20 @@ def load_yaml_planner_options(path: Optional[str], context) -> PlanNetworkOption
 
 
 _yaml_help = """\
-Path to planning settings yaml file
-
-Currently it can contain sections for customising the
-atom mapper and network planning algorithm,
-these are addressed using a `mapper:` or `network:` key in the yaml file.
-The algorithm to be used for these sections is then specified by the `method:` key.
-For choosing mappers, either the LomapAtomMapper or KartografAtomMapper are allowed choices,
-while for the network planning algorithm either the generate_minimal_spanning_tree or
-generate_minimal_redundant_network options are allowed.
-Finally, a `settings:` key can be given to customise the algorithm,
-with allowable options corresponding to the keyword arguments of the Python API for these algorithms.
-
-For example, this is a valid settings yaml file to specify that
-the Lomap atom mapper should be used forbidding element changes,
-while the generate_minimal_redundant_network function used to plan the network
+Path to a YAML file specifying the atom mapper (`mapper:`) and/or network planning algorithm (`network:`) to use.
+
+Supported atom mapper choices are:
+    - `LomapAtomMapper`
+    - `KartografAtomMapper`
+
+Supported network planning algorithms include (but are not limited to):
+    - `generate_minimal_spanning_tree`
+    - `generate_minimal_redundant_network`
+    - `generate_radial_network`
+
+The `settings:` allows for passing in any keyword arguments of the method's corresponding Python API.
+
+For example:
 ::
 
   mapper:
@@ -210,7 +209,6 @@ def load_yaml_planner_options(path: Optional[str], context) -> PlanNetworkOption
       mst_num: 3
 """
 
-
 YAML_OPTIONS = Option(
     '-s', "--settings", "yaml_settings",
     type=click.Path(exists=True, dir_okay=False),