why this rune transfer without edicts?

[Ljzn]

Hello, I'm learning the runes protocol. The specification says runes be transferred with edicts, but I found this tx:

https://ordiscan.com/tx/a541cf35eed3f17651f5a44ef5a9a41ac23ad465ee9ef2ef865691fc5915ed4c

which transfers runes without any op_return output. Is this a hidden rule of runes?

[raphjaph]

It's not made explicit in the docs but if you read these two parts from https://docs.ordinals.com/runes.html, you can see that a tx with no edict but runes in any of the inputs, transfers them to the first non-OP_RETURN output.

Edicts
A runestone may contain any number of edicts. Edicts consist of a rune ID, an amount, and an output number. Edicts are processed >in order, allocating unallocated runes to outputs.

Pointer
After all edicts are processed, remaining unallocated runes are transferred to the transaction's first non-OP_RETURN output. A runestone may optionally contain a pointer that specifies an alternative default output.

[Ljzn]

Thank you!