- BEG_MACRO, // a macro begins here
- END_MACRO, // a macro ends here
- BEG_ARG, // a macro argument begins here
- END_ARG, // a macro argument ends here
- BEGIN, // dummy element before row
- END, // dummy element after row
- BOX // an empty box
+ BOX, // an empty box
+ BEGIN, // an inset and/or a math array begins here
+ END, // an inset and/or a math array ends here
+ DUMMY // a dummy element (used before or after row)