Compile/Summarise a list of checklist/checkboxes/actions

I add checkboxes as actions throughout documents.
Imagine if coda could automatically summarise these actions/checkboxes.
Basically: compile and summarise all checkboxes/actions from a document in one place, by reference. (ie checking the box in the summary checks it in its original location too).
As I want to leave the checkboxes in place and in context, spread out throughout a document.

I noticed other people have discussed this:

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