Simple but satisfying project

An indicator probably using zigzag to recognise a most recent low to high, or high to low on a chart, and draws 3 horizontal lines based on extremely simple calculations. (For example one of the lines is simply yesterday's close). Extension lines above and below two out of the three lines, based either on fibs of the recent high to low, or another calculation which is again, simple, based on averaging over last 5 candles. One of the lines plus its extensions are moved from the low to high of the zigzag, such that the line instead extends from the previous day's close. Some comments appear based on where price is at in relation to the various lines. Useful if lookback is offered (i.e. the lines show history, as the calculation will be reperformed at the start of each new daily candle).