diff --git a/doc/Guidebook.mn b/doc/Guidebook.mn
index 17988f643..baecd5e3f 100644
--- a/doc/Guidebook.mn
+++ b/doc/Guidebook.mn
@@ -35,7 +35,7 @@
 .ds vr "NetHack 3.7
 .ds f0 "\*(vr
 .ds f1
-.ds f2 "July 27, 2021
+.ds f2 "August 26, 2021
 .
 .\" A note on some special characters:
 .\" \(lq = left double quote
@@ -1637,8 +1637,9 @@ Bury objects under and around you.
 Autocompletes.
 Debug mode only.
 .lp #wizdetect
-Search for hidden things (secret doors or traps or unseen monsters)
+Reveal hidden things (secret doors or traps or unseen monsters)
 within a modest radius.
+No time elapses.
 Autocompletes.
 Debug mode only.
 Default key is \(oq\(haE\(cq.
@@ -1802,6 +1803,7 @@ option is on, some additional letter commands are available:
 .lp u
 #untrap
 .
+.BR 1 \"blank line for extra separation; plain text output looks better
 .hn 1
 Rooms and corridors
 .pg
diff --git a/doc/Guidebook.tex b/doc/Guidebook.tex
index aa01210c9..0818c8812 100644
--- a/doc/Guidebook.tex
+++ b/doc/Guidebook.tex
@@ -45,7 +45,7 @@
 %.au
 \author{Original version - Eric S. Raymond\\
 (Edited and expanded for 3.7 by Mike Stephenson and others)}
-\date{July 27, 2021}
+\date{August 26, 2021}
 
 \maketitle
 
@@ -1742,8 +1742,9 @@ Autocompletes.
 Debug mode only.
 %.lp
 \item[\tb{\#wizdetect}]
-Search for hidden things (secret doors or traps or unseen monsters)
+Reveal hidden things (secret doors or traps or unseen monsters)
 within a modest radius.
+No time elapses.
 Autocompletes.
 Debug mode only.
 Default key is `{\tt \^{}E}'.
@@ -1951,6 +1952,8 @@ are available:
 {\tt\#untrap}
 \elist
 
+%.BR 1 \"blank line for extra separation; plain text output looks better
+
 %.hn 1
 \section{Rooms and corridors}