symbol.equation.gpt R package: Powerful user interface to build equations and insert symbols in R documents such as Rmarkdown or Quarto or Shiny applications.

install.packages("symbol.equation.gpt")
library("symbol.equation.gpt")
# Launch 1: from Addins
# Go to "Addins" in RStudio, and click on "Symbols and Equations"
# Launch 2: from console
symbol.equation.ui()
# Launch 3: from console
symbol.equation.ui2()