- Increase sans font weight from regular to medium.

- Fix multiparagraph boxout formatting.
- Add NumberWord command and option for part titles.

Manual.cls

@@ -52,6 +52,15 @@
 }
 \NewExpandableDocumentCommand{\DoRomanNumerals}{}{\g_roman_bool}
 
+% Option 'numberword': render Part numbers as number words (e.g. One, Two, Three).
+\bool_new:N \g_number_word_bool
+\bool_gset_false:N \g_number_word_bool
+
+\DeclareOption{numberword}{
+	\bool_gset_true:N \g_number_word_bool
+}
+\NewExpandableDocumentCommand{\DoNumberWords}{}{\g_number_word_bool}
+
 % Option 'labels': show Part and Chapter labels in the header.
 \bool_new:N \g_label_bool
 \bool_gset_false:N \g_label_bool