2.1.1375 Part 4 Section 22.214.171.124, effectDag (Effect Container)
For additional notes that apply to this portion of the standard, please see the notes for cont, §126.96.36.199(a).
a. The standard allows the user to create contradictory shape properties by using similar tags under effectDag and spPr at the same time.
In Office, the behavior is unspecified if effectDag is used in conjunction with the following sibling elements: blipFill, gradFill, grpFill, noFill, pattFill, solidFill, effectLst.