Spacebars are ridiculously long, as is having the modifier keys under your hands, requiring moving off home row to press them. Suggestions for adding keys below spacebar? (more in comments) : r/MechanicalKeyboards
Command, Options, Shift, or other modifier keys not working - CNET
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Keyboard And Layout Of Keyboard With Key Description - World Tech Journal
2021 New 9 Key Keycap WASD Mechanical Keyboard Keycaps for OEM Profile PBT RGBY Modifiers WXTB| | - AliExpress
Keyboard map : why not adding 'Menu' key as a modifier? - Help & Support - Directory Opus Resource Centre
Modifier Keys and Other, Less Used Keys - Keyboarding
Definition of modifier key | PCMag
Space-cadet keyboard - Wikipedia
File:Apple Modifier Keys.jpg - Wikimedia Commons
Modifier key order - All this
FC660M with Cherry MX Brown switches enjoyPBT CMYK dyesub modifiers enjoyPBT purple dyesub keyset
Modifier & Function Keys Stickers for Keyboards (extended version)
The Modifier Key - Made in Germany
WASD Keyboards - Large Font/Blank modifiers.... | Facebook
No Font Mechanical Keyboard Keycaps OEM Profile PBT Modifiers 10 Key Keycap | Shopee Brasil