Update yssymbols.sty

latex/yssymbols.sty

@@ -50,7 +50,7 @@
 
 \newenvironment{specification}{\vskip-\lastskip\ \par\begin{mdframed}[skipbelow=1ex]\begin{description}}{\end{description}\end{mdframed}}
 
-\newenvironment{schema}[2]{\vskip-\lastskip\ \par\begin{mdframed}[skipbelow=1ex]\hfill Table \textbf{\sffamily #1}\hfill Clé primaire \textbf{\sffamily #2}\hfill \null\begin{description}}{\end{description}\end{mdframed}}
+\NewDocumentEnvironment{schema}{mmo}{\vskip-\lastskip\ \par\begin{mdframed}[skipbelow=1ex]\hfill Table \textbf{#1}\hfill Clé primaire \textbf{#2}\hfill\null\IfNoValueTF{#3}{}{\\\null\hfill #3\hfill\null}\begin{description}}{\end{description}\end{mdframed}}
 
 \def\nsql#1{\textbf{\sffamily #1}}