Issue Summary

It is currently unclear that when `adfExport` function is invoked based on the documentation:

https://developer.atlassian.com/platform/forge/manifest-reference/modules/macro/

The suggestion is to include additional description on:

• clarify that the function can be invoked other than direct user invocation (e.g. button click)
• provide information on when the function are also invoked (e.g. when confluence is generating a snapshot) 

Steps to Reproduce

N/A

Expected Results

N/A

Actual Results

N/A

Workaround