diff --git a/doc/ib/appH.tex b/doc/ib/appH.tex
index f9a2d133e..842eadb3e 100644
--- a/doc/ib/appH.tex
+++ b/doc/ib/appH.tex
@@ -21,7 +21,9 @@ \chapter{Glossary of Defined Symbols}
 of parameters in \texttt{\#begdef} multi-line macros; they are local in
 scope and cannot be modified in \textfn{define.h} or used anywhere else.
 
-
+Some symbols -- mostly those of historical interest --  have been removed from
+the present source code. The definitions have been retained here and are colored
+in {\gr grey}.
 \bigskip
 
 % \texttt{1st column}, \center{2nd column} 
@@ -560,8 +562,6 @@ \section{A Bestiary of Unicon Releases}
 % the default value (of 0.1) gives very short pages: this works better for this table.
 \xentrystretch{-0.15}
 %
-\definecolor{lightgrey}{RGB}{180,180,180}
-\newcommand{\gr}[1]{\color{lightgrey}#1}
 \begin{xtabular}{|c@{\hspace{1cm}}c@{\hspace{1cm}}lll@{\hspace{1cm}}l|}
 %%
 %% In reverse chronological order ----------------------------------------
diff --git a/doc/ib/ib.tex b/doc/ib/ib.tex
index 48afc51a2..a79afb8a8 100644
--- a/doc/ib/ib.tex
+++ b/doc/ib/ib.tex
@@ -55,6 +55,9 @@
 %\setlength\headheight{0.5075in}
 %\setlength\headsep{0.2in}
 %
+%Grey
+\definecolor{lightgrey}{RGB}{180,180,180}%
+\newcommand{\gr}[1]{\color{lightgrey}#1}%
 %Figures
 \setlength{\abovecaptionskip}{0pt plus 2pt minus 20pt}% [DonW] May need to tweak these
 \setlength{\belowcaptionskip}{0pt plus 2pt minus 20pt}%        values.
diff --git a/doc/ib/p1-storage.tex b/doc/ib/p1-storage.tex
index e02c7630d..9506e5df1 100644
--- a/doc/ib/p1-storage.tex
+++ b/doc/ib/p1-storage.tex
@@ -1404,7 +1404,6 @@ \subsection{Pointer Adjustment and Compaction}
 indicate marked blocks, and clear areas indicate unmarked blocks:
 
 
-\definecolor{lightgrey}{RGB}{180,180,180}
 \begin{picture}(300,200)
 \thicklines
 \put(80,183){\vector(1,0){20}}