No references to @member@ are allowed here since there is only one
help text for all four mvblob commands.
This bug was introduced one year ago in commit
aa4b3935 (Overhaul
help texts of server and afs commands).
O: int com_mv@member@(struct command_context *cc);
P: AFS_READ | AFS_WRITE
D: Rename a blob of type @member@.
-U: mv@member@ old_@member@_name new_@member@_name
-H: Rename the blob identified by old_@member@_name to new_@member@_name.
-H: This command fails if new_@member@_name already exists.
+U: mv@member@ source_@member@_name dest_@member@_name
+H: Rename the blob identified by the source blob name to the destination blob
+H: name. The command fails if the source does not exist, or if the destination
+H: already exists.