diff -r 73fef626dae3 -r 9b19b8ce3804 mercurial/help/internals/wireprotocolv2.txt
--- a/mercurial/help/internals/wireprotocolv2.txt	Mon Oct 08 16:27:40 2018 -0700
+++ b/mercurial/help/internals/wireprotocolv2.txt	Mon Oct 08 17:20:41 2018 -0700
@@ -87,16 +87,6 @@
       permissions
          An array of permissions required to execute this command.
 
-compression
-   An array of maps defining available compression format support.
-
-   The array is sorted from most preferred to least preferred.
-
-   Each entry has the following bytestring keys:
-
-      name
-         Name of the compression engine. e.g. ``zstd`` or ``zlib``.
-
 framingmediatypes
    An array of bytestrings defining the supported framing protocol
    media types. Servers will not accept media types not in this list.