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Setting and checking mask states
The mask states can be manipulated using the following functions:
![$\textstyle \parbox{\linewidth}{
\vspace{\baselineskip}\noindent\texttt{
SpaceM...
... \item[\emph{state\_name}] The name of the state to be set.
\end{description}}}$](img590.png)
The value of the mask variable is changed to turn on the specified state at the point.
![$\textstyle \parbox{\linewidth}{
\vspace{\baselineskip}\noindent\texttt{
SpaceM...
...em[\emph{state\_name}] The name of the state to be checked.
\end{description}}}$](img591.png)