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Yet another unnecessary esoteric programming language.
This language was invented in May-June 2020 for one competition (alas, canceled due to COVID-19).
The first interpreter worked in Python (then there were attempts to port it to C ++, but they were never completed), and the language consisted of 19 commands.
Due to its uselessness, it got lost in a heap of files on the disk.
However, in May 2021, it was completely accidentally found, expanded to 24 commands and rewritten in C.
The essence of this esoteric language is that only 4 characters are used to create programs - "9" "0" "(" ")".
They are most often used at the end of messages as "emoticons" of joy or sadness (hence the name HELLSMI - Hellish smile).
This idea came to my mind when in one chat someone said: "I want to program with emoticons-quotes, it would be cool." Then I thought, "Well, that sounds good."
This is how HELLSMI was born. Its syntax is similar to Assembly language - at the beginning there is a command, and then the parameters it needs, commands are separated from each other by line breaks.
You can read more about the language and its commands here.