doc updates

armi/reactor/flags.py

@@ -293,15 +293,14 @@ def fromString(cls, typeSpec):
             :id: I_ARMI_FLAG_TO_STR0
             :implements: R_ARMI_FLAG_TO_STR
 
-            For a string passed as ``typeSpec``, first converts the whole string
-            to uppercase. Then tries to parse the string for any special phrases, as
-            defined in the module dictionary ``_CONVERSIONS``, and converts those
-            phrases to flags directly.
-
-            Then it splits the remaining string into separate words based on the presence
-            of spaces. Looping over each of the words, any numbers are stripped out
-            and the remaining string is matched up to any class attribute names.
-            If any matches are found these are returned as flags.
+            For a string passed as ``typeSpec``, first converts the whole string to uppercase. Then
+            tries to parse the string for any special phrases, as defined in the module dictionary
+            ``_CONVERSIONS``, and converts those phrases to flags directly.
+
+            Then it splits the remaining string into words based on spaces. Looping over each of the
+            words, if any word exactly matches a flag name. Otherwise, any numbers are stripped out
+            and the remaining string is matched up to any class attribute names. If any matches are
+            found these are returned as flags.
         """
         return _fromString(cls, typeSpec)
 
@@ -314,11 +313,9 @@ def toString(cls, typeSpec):
             :id: I_ARMI_FLAG_TO_STR1
             :implements: R_ARMI_FLAG_TO_STR
 
-            This converts the representation of a bunch of flags from ``typeSpec``,
-            which might look like ``Flags.A|B``,
-            into a string with spaces in between the flag names, which would look
-            like  ``'A B'``. This is done via nesting string splitting and replacement
-            actions.
+            This converts the representation of a bunch of flags from ``typeSpec``, which might look
+            like ``Flags.A|B``, into a string with spaces in between the flag names, which would
+            look like  ``'A B'``. This is done via nesting string splitting and replacement actions.
         """
         return _toString(cls, typeSpec)
 

doc/release/0.4.rst

@@ -18,6 +18,7 @@ New Features
 #. Allow merging a component with zero area into another component. (`PR#1858 <https://github.com/terrapower/armi/pull/1858>`_)
 #. Provide ``Parameter.hasCategory`` for quickly checking if a parameter is defined with a given category. (`PR#1899 <https://github.com/terrapower/armi/pull/1899>`_)
 #. Provide ``ParameterCollection.where`` for efficient iteration over parameters who's definition matches a given condition. (`PR#1899 <https://github.com/terrapower/armi/pull/1899>`_)
+#. Flags can now be defined with letters and numbers. (`PR#1966 <https://github.com/terrapower/armi/pull/1966>`_)
 #. Plugins can provide the ``getAxialExpansionChanger`` hook to customize axial expansion. (`PR#1870 <https://github.com/terrapower/armi/pull/1870`_)
 #. Plugins can provide the ``getAxialExpansionChanger`` hook to customize axial expansion. (`PR#1870 <https://github.com/terrapower/armi/pull/1870>`_)
 #. New plugin hook ``beforeReactorConstruction`` added to enable plugins to process case settings before reactor init. (`PR#1945 <https://github.com/terrapower/armi/pull/1945>`_)