The triple join block is a reporter block and an operators block that acts like the vanilla join block, but with three instead of two values.

Join () () ()
...
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Caption
Block Type Reporter
Category / Extension Operators
Status Who tf uses status

Variants

The Operators Expansion extension has multiple versions of this block with up to 9 inputs instead.

Workaround

This block and its variants can be worked around by using multiple join blocks.