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Commentpress breaks up content into a commentable form according to paragraph breaks and lists ( <p>, <ol>, <ul> ). Wordpress automatically inserts paragraph tags into your document when it detects two line breaks. This works well for most texts.
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We realize that when you reorganize things in this way the term “paragraph” begins to get a bit wobbly. We thought of calling them “lexias” (units of reading) but that seemed a little too obscure. Let us know if you have any other ideas.
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Please note: headings and other more elaborate formatting will not be picked up as a text block on which comments can be left. Part of the reason for this is the way a text block is represented — headings often do not have enough content to distinguish one from another. We would appreciate feedback on which tags would be most useful to make commentable.
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If you want to make video embeds and images commentable, then wrap them in a paragraph. For example:
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Paragraph links: you can link to a particular paragraph in the same document by copying the adjoining speech bubble’s link and then use it anywhere. Links to other pages work just the same.

Many journalists I know refer to “graphs.” A “paragraph” could be the larger term. Or to be clearer, change the term for the aggregated paragraphs — perhaps call them “comment sections.”
Another option: Jack Slocum, whose own granular commenting system very much influenced Commentpress, calls them “blocks”.
It’s awesome that you use paragraph tags, I wrote my own commenting system many years ago in perl and it also used paragraph breaks. So hopefully I can port my book draft over to Comment Press with minimal reformatting required.
This is an interesting piece of software – looks fantastic for this kind of thing actually.
[...] tools is actually a pretty clever and simple extension of WordPress, called Commentpress. It links the comments to specific paragraphs in a post, displaying the two side-by-side not [...]
I like “blocks” myself. I also like “units” or “sense unit”.
I have a document that includes many bulleted lists, and Commentpress is essentially useless because there is no way to indicate that a list is a paragraph. Doesn’t help to add tags around the list. Makes me very sad, as Commentpress is so useful otherwise.