STOR stores particles of its ctype. For example, STOR(SAND) would only store SAND. Each STOR pixel only stores 1 SAND pixel. When the STOR is powered with PSCN, or BRAY is passed through a bunch of STOR, the STOR releases the particle it was holding. Plenty of saves can be found where things are sorted with STOR. Also, STOR readily passes to PIPE without needing to be powered.