Set ENVIRONMENT VARIABLES permanently in MAC Terminal, which else keep getting lost despite export

• https://stackoverflow.com/questions/22502759/mac-os-x-10-9-setting-permanent-environment-variables
• vi ~/.zshrc ( OR ~/.zshenv OR ~/.bash_profile OR ~/.profile CHOOSE https://www.baeldung.com/linux/bashrc-vs-bash-profile-vs-profile https://apple.stackexchange.com/questions/356441/how-to-add-permanent-environment-variable-in-zsh https://stackoverflow.com/questions/65597552/how-exactly-to-set-up-and-use-environment-variables-on-mac)
• -Add an export statement-
• -To test , RESTART terminal first. No Machine restart needed. But even in same session changes DON'T show up, so RESTART TERMINAL-

Unhide Foldrer permanently

chflags -R nohidden <drag folder here>