[MrSilverstrike]

I've been keeping an eye on this thread for a bit, but I do think it's worth clarifying how vertical justification works.

Vertical justification is careful on purpose. It only closes small gaps at the bottom of a page. I've seen some comments here about potential confusion, so let me lay out how the feature works here:

Expand line height changes a page only when all of these are true:

- The page has at least 6 lines of normal text.
- The empty space is at most 1/8 of the page height.
- The space between any two lines would grow by at most 1/8 of a line, on average.

For example, on a page of about 30 lines, it can fill a gap of up to about 3 to 4 lines. On a page of about 10 lines, it can fill only about 1 line.

Center content vertically centers a page only when the text already fills at least 90% of the page height. The empty space must be 10% or less.

Both modes always leave a page alone if:

- it has footnotes at the bottom
- it has a picture, table or other block that runs onto the next page
- it has a picture with its caption that would be split across pages
- it has content the feature doesn’t recognise

The last page of a chapter is usually much shorter than a full page, so it stays as it is. Also, page breaks stay the same. Depending on how your book is formatted, results may vary.

These are extra options that I'm making available in Kobalt, but they may not always work as expected given the markup of the book you're viewing. Alas, I cannot literally fix every book under the sun.

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Then, a few notes:

- Please be patient for the next beta release. Understand that it will normally take about a week between beta releases, unless it's necessary to release a hotfix because there's a major issue with a beta release. And even then, it's a beta, there will be bugs. No need to create a patch or fork for anything yet, reporting the issue is sufficient.

- Don't forget: this is all still actively being worked on by me after work hours (and programming is already my day job), and I've frankly been releasing beta builds at an insane pace so far. Essentially all of my free time has gone into Kobalt over the last six weeks or so. I just want to adjust expectations for a bit... this fast pace will be the exception to the rule.

- And this one's for Jon: consider for a moment, please, that people may have different tastes and approaches to how they want things to work. Have you tried Kobalt? It sounds like you haven't yet, based on your comments. Please do so! If you have meaningful feedback I'd be happy to hear what you have to say, but if all you have to say is "just remove feature X lol" then I hope you realize that's not very helpful. Thanks.