diff --git a/docs/doxygen/dox/H5.format.4.0.dox b/docs/doxygen/dox/H5.format.4.0.dox
index a97d9bf3333..674f087ba79 100644
--- a/docs/doxygen/dox/H5.format.4.0.dox
+++ b/docs/doxygen/dox/H5.format.4.0.dox
@@ -5767,7 +5767,7 @@ implemented in the HDF5 Library:
| Length: Varies |
- | Status: Optional; may not be repeated. |
+ Status: Required for “new style” groups; may not be repeated. |
| Description: |
@@ -8835,7 +8835,7 @@ The following information exists only when the chunk is filtered. In other words
Length: Varies |
- | Status: Optional; may not be repeated. |
+ Status: Required for “new style” groups; may not be repeated. |
| Description: |
@@ -8908,14 +8908,17 @@ The following information exists only when the chunk is filtered. In other words
| Link Phase Change: Maximum Compact Value |
- The is the maximum number of links to store “compactly” (in the group’s object header).
+ | This is the maximum number of links to store “compactly” (in the group’s object header).
+ If this field is not present, the default value of 8 will be used for the maximum compact
+ value.
This field is present if bit 0 of Flags is set. |
| Link Phase Change: Minimum Dense Value |
This is the minimum number of links to store “densely” (in the group’s fractal
heap). The fractal heap’s address is located in the @ref subsubsec_fmt4_dataobject_hdr_msg_linkinfo
- message.
+ message. If this field is not present, the default value of 6 will be used for the minimum
+ dense value.
This field is present if bit 0 of Flags is set. |