tests

diff --git a/article.tex b/article.tex
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+\documentclass[a4paper]{article}
+\usepackage{MnSymbol}
+\usepackage{stmaryrd}
+\begin{document}
+\def\iwjtest{{/\mkern-9mu\Sqsupset}}
+\newcommand{\iwjtestx}{\ensuremath{\mathaccent\Sqsubset\sslash}}
+sponge
+$ A \sqsubseteq B $
+$ A \not \sqsubseteq B $
+$ A \nsqsubseteq B $
+$ A \Sqsubset B $
+$ A \Sqsupset B $
+$ \sslash $
+$ \iwjtest $
+$ \iwjtestx $
+\end{document}