2.1.1156 Part 1 Section 19.5.31, cond (Condition)
a. The standard does not state a default value for the delay attribute.
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PowerPoint uses a default value of 0 for the delay attribute.
b. The standard places no restrictions on the relationship between the value of the evt attribute and the child elements of the cond element.
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PowerPoint does not support the rtn, tgtEl, or tn child elements when the value of the evt attribute is none; if the evt attribute has any other value, the child element specifies the target of the event.