There are various Unicode blocks dedicated to symbols. There are cartography symbols, domino tiles, alchemical symbols... There is even a block for "legacy comp

There are various Unicode blocks dedicated to symbols. There are cartography symbols, domino tiles, alchemical symbols... There is even a block for "legacy computing". https://en.wikipedia.org/wiki/Unicode_block#List_of_blocks https://en.wikipedia.org/wiki/Unicode_block#List_of_blocks