diff --git a/doc/efun/bytesp b/doc/efun/bytesp
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+SYNOPSIS
+        int bytesp(mixed arg)
+
+DESCRIPTION
+        Return 1 if arg is a byte sequence.
+
+HISTORY
+        Introducted in LDMud 3.6.0.
+
+SEE ALSO
+        clonep(E), closurep(E), floatp(E), mappingp(E), objectp(E), intp(E),
+        referencep(E), pointerp(E), stringp(E), structp(E), symbolp(E)