Description
Codex has been archived. This is because of a lack of interest in it's development.
Codex
Codex allows you to gain information and do quick calculations in a Satisfactory-style codex screen.
Currently, the mod is a proof of concept - but it is being actively developed.
I wouldn't consider it a replacement for Roughly Enough Items or Too Many Items - as those mods are more focused on the data part of the items.
Codex is more useful if you want to figure out what to do with an item, not how.
Setup
Codex will guide you through it's setup screen when you launch the game for the first time with the mod:

These data sources are from the data repository - and respect the license of the source.
Showcase
Quickmath Parser
The quickmath parser allows you to quickly evaluate arithmetic expressions.
This is especially useful for technical minecrafters - as it allows you to calculate various things such as shulker box capacity/redstone tick math using built in functions.

The quickmath parser also supports:
Quickmath Functions And Constants
Functions
stacksin(shulkers) = shulkers * 30
shulkersof(stacks) = stacks / 30
stacksof(items) = items / 64
itemsof(stacks) = stacks * 64
secsin(ticks) = ticks / 20
ticksin(secs) = secs * 20
Constants
STACK = 64
SHULKER = 1920
DAY = 72 * 24000
HOUR = (72 * 24000) / 24
MIN = (72 * 24000) / 24 / 60
SEC = (72 * 24000) / 24 / 60 / 60
MS = (72 * 24000) / 24 / 60 / 60 / 1000
MC_DAY = 24000
MC_HOUR = 24000 / 24
MC_MIN = 24000 / 24 / 60
MC_SEC = 24000 / 24 / 60 / 60
MC_MS = 24000 / 24 / 60 / 60 / 1000
Quicksearch
The quicksearch functionality allows you to quickly search for items - you can scroll the searchbar by dragging outside the list or using your scrollwheel.
Clicking on a search element opens it's codex page.

Item descriptions are from the sources you chose during codex setup.
Contributing
Want to add support for your mod? Check out the data repository which stores all the item descriptions and other miscelaneous content.
PS: The mod is All Rights Reserved currently as I do not see it fit for contributions. The data branch of the repository though is licensed by-file, not entirely as a whole. Please see _index.json
for licensing of sources.
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What means Verified?
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Compatibility: The mod should be compatible with the latest version of Minecraft and be clearly labeled with its supported versions.
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Functionality: The mod should work as advertised and not cause any game-breaking bugs or crashes.
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Security: The mod should not contain any malicious code or attempts to steal personal information.
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Performance: The mod should not cause a significant decrease in the game's performance, such as by causing lag or reducing frame rates.
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Originality: The mod should be original and not a copy of someone else's work.
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Up-to-date: The mod should be regularly updated to fix bugs, improve performance, and maintain compatibility with the latest version of Minecraft.
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Support: The mod should have an active developer who provides support and troubleshooting assistance to users.
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License: The mod should be released under a clear and open source license that allows others to use, modify, and redistribute the code.
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Documentation: The mod should come with clear and detailed documentation on how to install and use it.
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How to Install
Download Forge & Java
Download Forge from the offical Site or here. If you dont have Java installed then install it now from here. After Downloading Forge you can run the file with Java.
Prepare
Lounch Minecraft and select your Forge istallation as Version this will create a Folder called Mods.
Add Mods
Type Win+R and type %appdata% and open the .minecraft Folder. There will you find your Folder called Mods. Place all Mods you want to play in this Folder
Enjoy
You are now Ready. Re-start your Game and start Playing.