Mini-notation references

hello, is there any paper or book section where I can find more details about the mini notation? in my package for Pharo I am using something very similar to it. both to make it easier for Tidaler to learn it, both to allow a smooth transition when the users of Coypu (this is the name of the package) would like to try or switch to Tidal.
I hope there is no proble to call ‘mini-notation’ this use of strings in Pharo.
peace.
d