heirographics 

Texts composed of ideograms, especially emojis.

It isn't possible to cut/paste a good example in this text box, but I can describe one (which, by the way, doesn't involve any particular language, but I defaulted to English below). To send birthday greetings in simple "heirographics," I use variations on this series of emojis: Partying face / champagne / birthday cake / hourglass / pistol aimed at hourglass .

heirographics by Hume's Daughter December 1, 2019

hyrographics 

the use of icons and pictures instead of words that has become common place among the computer savvy youth.

we use so many hyrographics that soon words will no longer be written and future civilizations will have to decipher our language like we are with ancient eygyptian language

hyrographics by pokeyz123 February 23, 2015