The function keys f4 and f5 execute respectively, the edited REC program or the selected demonstration. F4 and F5 show up to 40 symbols from these programs, for purposes of confirmation. Paragraph up and down change the demonstration selection, while ^^PPU and PPD show the first and last; generally one tries to keep the usage of these keys consistent with their use in an editor. All these displays are made in the E panel.
Harold V. McIntosh