It’s a string that converts in the game into the actual commands. Makes it easier to prevent any errors when copy and pasting complex macros, compared to legacy code where it could easily break if had a wrong character.
Some people omit on the site what actually the macro does when exporting from GSE, as it would tell you some general information about the macro if you choose to.
I had to translate with Google, but if you are looking for were to put 35ms it’s either in the third party software (like Logitech / Razer, etc) or if you are looking to use GSE pause wait feature it should be under the GSE Options.