diff --git a/.gitignore b/.gitignore
index baaaf3a9a..4110ec6ed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 #
-# sort with: bin/sgi
+# sort with: bin/sgi.sh
 .DS_Store
 /NOTES
 /archive/historic/1984
@@ -29,8 +29,9 @@
 /archive/historic/2018
 /archive/historic/2019
 /archive/historic/2020
-.tmp.*
+debug.input.md
+debug.output.html
 .su[a-z]
 .*.sv[a-z]
 .*.sw[a-z]
-.sw[a-z]
+.tmp.*
diff --git a/1990/.gitignore b/1990/.gitignore
index 2a93efbae..7e0ed9c74 100644
--- a/1990/.gitignore
+++ b/1990/.gitignore
@@ -1,2 +1,2 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
diff --git a/1992/.gitignore b/1992/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/1992/.gitignore
+++ b/1992/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/1993/.gitignore b/1993/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/1993/.gitignore
+++ b/1993/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/1994/.gitignore b/1994/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/1994/.gitignore
+++ b/1994/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/1995/.gitignore b/1995/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/1995/.gitignore
+++ b/1995/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/1996/.gitignore b/1996/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/1996/.gitignore
+++ b/1996/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/1998/.gitignore b/1998/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/1998/.gitignore
+++ b/1998/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/2000/.gitignore b/2000/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/2000/.gitignore
+++ b/2000/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/2001/.gitignore b/2001/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/2001/.gitignore
+++ b/2001/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/2004/.gitignore b/2004/.gitignore
index 0a49f5aa2..5a7e98876 100644
--- a/2004/.gitignore
+++ b/2004/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 mkentry
 mkentty.o
diff --git a/2013/.gitignore b/2013/.gitignore
index 2ba6addf0..7aae60d30 100644
--- a/2013/.gitignore
+++ b/2013/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 iocccsize
 iocccsize.o
diff --git a/2014/.gitignore b/2014/.gitignore
index 2ba6addf0..7aae60d30 100644
--- a/2014/.gitignore
+++ b/2014/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 iocccsize
 iocccsize.o
diff --git a/2015/.gitignore b/2015/.gitignore
index 2ba6addf0..7aae60d30 100644
--- a/2015/.gitignore
+++ b/2015/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 iocccsize
 iocccsize.o
diff --git a/2018/.gitignore b/2018/.gitignore
index 2ba6addf0..7aae60d30 100644
--- a/2018/.gitignore
+++ b/2018/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 iocccsize
 iocccsize.o
diff --git a/2019/.gitignore b/2019/.gitignore
index 2ba6addf0..7aae60d30 100644
--- a/2019/.gitignore
+++ b/2019/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 iocccsize
 iocccsize.o
diff --git a/2020/.gitignore b/2020/.gitignore
index 2ba6addf0..7aae60d30 100644
--- a/2020/.gitignore
+++ b/2020/.gitignore
@@ -1,4 +1,4 @@
 #
-# sort with: ../bin/sgi
+# sort with: ../bin/sgi.sh
 iocccsize
 iocccsize.o
diff --git a/bin/pandoc-wrapper.sh b/bin/pandoc-wrapper.sh
index a490866ba..9547f0a5f 100755
--- a/bin/pandoc-wrapper.sh
+++ b/bin/pandoc-wrapper.sh
@@ -99,7 +99,7 @@ shopt -s globstar	# enable ** to match all files and zero or more directories an
 
 # set variables referenced in the usage message
 #
-export VERSION="1.6.2 2024-04-18"
+export VERSION="1.6.3 2024-06-22"
 NAME=$(basename "$0")
 export NAME
 export V_FLAG=0
@@ -413,9 +413,11 @@ else
 fi
 if [[ $status -ne 0 ]]; then
     echo "$0: ERROR: pandoc: $PANDOC_TOOL exited non-zero: $status" 1>&2
-    cp -f "$MARKDOWN_INPUT" XXX # XXX
     if [[ -n $NOOP ]]; then
-	cp -f "$HTML_OUTPUT" YYY # XXX
+	echo "$0: Warning: forming debug.input.md from: $MARKDOWN_INPUT" 1>&2
+	cp -v -f "$MARKDOWN_INPUT" debug.input.md
+	echo "$0: Warning: forming debug.output.html from: $HTML_OUTPUT" 1>&2
+	cp -v -f "$HTML_OUTPUT" debug.output.html
     fi
     exit 1
 fi