Recycling symbols

[Piotr Karocki]

Hi,
 there are recycling symbols in Unicode (U+2673 to U+2679, RECYCLING SYMBOL
FOR TYPE-1 PLASTICS to RECYCLING SYMBOL FOR TYPE-7 PLASTICS).  ♳ ♴ ♵ ♶ ♷ ♸
♹.
 But currently there are more recycling symbols in use, not only 1 to 7, but
also two digits numbers.

 How can I find original proposal of including symbols U+2673 to U+2679? I
want to simply extend it to new numbers, but use original rationale etc.

 By the way, can Unicode encode e.g. "combining recycling symbol" (something
like U+2672), combined with TWO digits?


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Piotr Karocki

Wszystko co jest poniżej jest samowolnym dopiskiem Google