default for ma@symmetric

According to the MathML3 spec

	http://www.w3.org/TR/MathML3/chapter3.html#presm.mo.attrs

the value for the "symmetric" attribute of the mo element is "set by dictionary (false)", but in the description just below that is says "Note that the default is true".  So I'm confused about which it should be.  If the operator dictionary doesn't specify a value, should it be symmetric or not?  I'm guessing it is false, since the dictionary explicitly gives some stretchy elements that symmetric property, but not others (e.g., vertical bars and vertical arrows are not listed as symmetric).

Also, what does the work "glossary" in "glossary Note that the default is true" mean (in the table for the attributes of mo)?  A typo?

Davide

Received on Saturday, 8 February 2014 19:22:44 UTC