diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index d55d3c6c4..980b1c5ff 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -46,7 +46,7 @@
 .ds f0 \*(vr
 .ds f1 \" empty
 .\"DO NOT REMOVE NH_DATESUB .ds f2 DATE(%B %-d, %Y)
-.ds f2 August 11, 2024
+.ds f2 September 13, 2024
 .
 .\" A note on some special characters:
 .\" \(lq = left double quote
@@ -5798,6 +5798,8 @@ d	S_dog	(dog or other canine)
 D	S_dragon	(dragon)
 ;	S_eel	(sea monster)
 E	S_elemental	(elemental)
+#	S_engrcorr	(engraving in a corridor)
+\`	S_engroom	(engraving in a room)
 /	S_expl_tl	(explosion top left)
 \-	S_expl_tc	(explosion top center)
 \\	S_expl_tr	(explosion top right)
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index 74e6c6884..d71cbd330 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -48,7 +48,7 @@
 \author{Original version - Eric S. Raymond\\
 (Edited and expanded for 3.7.0 by Mike Stephenson and others)}
 %DO NOT REMOVE NH_DATESUB \date{DATE(%B %-d, %Y)}
-\date{August 11, 2024}
+\date{September 13, 2024}
 
 \maketitle
 
@@ -6372,6 +6372,8 @@ Default                      & Symbol Name                & Description\\
 \verb@D@ & S\verb+_+dragon                  &	(dragon)\\
 \verb@;@ & S\verb+_+eel                     &	(sea monster)\\
 \verb@E@ & S\verb+_+elemental               &	(elemental)\\
+\# & S\verb+_+engrcorr                      &	(engraving in a corridor)\\
+\verb@`@ & S\verb+_+engroom                 &	(engraving in a room)\\
 \verb@/@ & S\verb+_+expl\verb+_+tl          &	(explosion top left)\\
 \verb@-@ & S\verb+_+expl\verb+_+tc          &	(explosion top center)\\
 \verb@\@ & S\verb+_+expl\verb+_+tr          &	(explosion top right)\\