But that’s not because it isn’t allowed. It's just that most blogs don’t go that far in their explanations.
They assume you get the concept of 'flat' architecture, and don’t bother to tell you anything else.
But cross-linking is acceptable and advisable, provided:
- the user gets where they want to go with as few clicks as possible, and
- when they get there, they can clearly see how to get back, or how to get somewhere else.
So, cross-linking is very desirable, if it sticks to the rules above.
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