docs: we are going to have namespaces

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.