+ NEGTHIN,
+ /// Negative medium space ('\negmedspace')
+ NEGMEDIUM,
+ /// Negative thick space ('\negthickspace')
+ NEGTHICK,
+ /// rubber length
+ HFILL,
+ /// \hspace*{\fill}
+ HFILL_PROTECTED,
+ /// rubber length, filled with dots
+ DOTFILL,
+ /// rubber length, filled with a rule
+ HRULEFILL,
+ /// rubber length, filled with a left arrow
+ LEFTARROWFILL,
+ /// rubber length, filled with a right arrow
+ RIGHTARROWFILL,
+ // rubber length, filled with an up brace
+ UPBRACEFILL,
+ // rubber length, filled with a down brace
+ DOWNBRACEFILL,
+ /// \hspace{length}
+ CUSTOM,
+ /// \hspace*{length}
+ CUSTOM_PROTECTED