diff --git a/accepted/ddlm_dictionary_style_guide.md b/accepted/ddlm_dictionary_style_guide.md
index 66b105d..f3b5ac2 100644
--- a/accepted/ddlm_dictionary_style_guide.md
+++ b/accepted/ddlm_dictionary_style_guide.md
@@ -1,6 +1,6 @@
 # Style Guide for DDLm Dictionaries
 
-Version 1.2.1 2022-05-10
+Version 1.2.2 2023-06-29
 
 ## Overview
 
@@ -246,7 +246,28 @@ compound objects.
                                      '_dictionary_audit.version'
                                      '_dictionary_audit.date'
                                      '_dictionary_audit.revision']
+```
+
+### 2.5 Enumeration ranges
+
+When giving enumeration ranges for `Integer` data items, no decimal
+point should be used. When giving enumeration ranges for `Real` data
+items, a decimal point should be used with at least one digit after
+the point. Any following digits, if present, must be non-zero.
 
+#### Examples
+
+```
+# Integer ranges
+1:230
+0:
+-8:8
+
+# Real number ranges
+0.0:100.0
+0.0:
+-180.0:180.0
+0.95:1.0
 ```
 
 ## 3. Data items
@@ -539,3 +560,4 @@ DESCRIPTION_EXAMPLE.
 |   1.1.0 | 2021-09-30 | Added rules 5.1 and 5.2 that deal with the naming of save frames. |
 |   1.2.0 | 2022-04-27 | Added rule 2.1.15 for manual opt-out of formatting. |
 |   1.2.1 | 2022-05-10 | Added consideration of special values. |
+|   1.2.2 | 2023-06-29 | Added rule 2.5 for enumeration formatting. |