2.1.1831 Part 4 Section 188.8.131.52, jc (Justification)
For additional notes that apply to this portion of the standard, please see the notes for defJc, §184.108.40.206(a) .
a. The standard says that if jc is omitted, the math paragraph is Centered as Group.
In Word, if jc is omitted, the value is taken from the document default defJc.