diff --git a/docs/setup.tex b/docs/setup.tex
index fca700a2c119220304c71d1436774534dbb22316..cdc22c15231dff9c450731f545f08be68f27c03a 100644
--- a/docs/setup.tex
+++ b/docs/setup.tex
@@ -312,6 +312,7 @@
 \newcommand{\inameB}{\iota'}
 
 \newcommand{\mask}{\mathcal{E}}
+\newcommand{\namesp}{\mathcal{N}}
 
 %% various pieces of Syntax
 \newcommand{\unitsort}{1}%	\unit is bold.