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Enhanced navigation menu
Clean layout on algorithm pages
Sequence highlighting (ex: Sexy Move)
Ability to filter algorithms by section
After building the 4x4 centers you can proceed with Pairing Edges like the 4x4x4 puzzle. Once the edges paired, the cube can be solved like a regular 3x3x3 puzzle (Reduction). Then, if applicable, look for Parity cases.
The algorithms depicted in this section doesn't cover every scenario. I suggest using them as training wheels to help you understand the cube mechanics.