### substrates-light.R ---
## Filename: substrates-light.R
## Description: Light indicators vs. substrate
## Author: Noah Peart
## Created: Fri Mar 11 16:17:02 2016 (-0500)
## Last-Updated: Fri Mar 11 20:41:45 2016 (-0500)
## By: Noah Peart
######################################################################
## Prefix: "sl"
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