Key Programs can be single characters, simple strings or complex macros.   For action keys use TAPLESSxp commands such as [Tab] or [Enter] .    Programs are output sequentially as if you were typing.  To insert delays use the Wait command  [Wait 2000].   Build complex programs progressively.  Start small and build up.    You can make successive selections from the pull down list to build a program or type it in directly.