I don't think there is an indicator for Metastock. It's most likely that people just use the chart price style option. Perhaps you could get someone to convert the attached variable line break into csv file format.
By the way, the line break method isn't an indicator. It's more a range between x number of period bar and current bar, high/low breakout... yeah probably is an indicator of price movement. Kinda like murrey math, but a little bit less complicated.
Anyway, good luck with getting the code converted to CSV.