Rocks'n'Diamonds

By any chance is the subsecond length stored anywhere in the tape file other than "play through the level and see how long it would take"?

Has there ever been any serious undertaking of TAS (tool-assisted speedrun) demos in Rocks'n'Diamonds? That is, the art of constructing playthroughs using 1-step mode, and any other tools (if they exist) to facilitate crazy stunts you'd never consider in realtime play? I stumbled across RND in the l...