2.1.1697 Part 1 Section, sub (Subscript (Pre-Sub-Superscript))

For additional notes that apply to this portion of the standard, please see the notes for oMath, §

a.   The standard says sub only specifies the subscript of sPre even though the schema also allows it as a child of sSub, sSubSup, and nary.

In Word, sub specifies the subscript of sPre, sSub, and sSubSup and specifies the lower limit of nary.