Shows the total item amount of what you are holding, unless you hold in a blueprint, then it shows how many times you can complete the blueprint.
Small changes concerning balance, gameplay, or graphics.
When playing with mods that change the size of the stack, the mod crashes when you try to take some blueprints from the book. Error screenshot https://imgur.com/bdFsKDr
Thanks for reporting this, I just released a new version which should fix the issue.
Thank you for answering so quickly, this is really cool!