- "nop-hist.txt" with lp lt 1 title "No modifications", \
- "mod-hist.txt" with lp lt 2 title "Two modifications", \
- "mod2-hist.txt" with lp lt 3 title "Four modifications", \
- "modcsxor-hist.txt" with lp lt 4 title "Four modifications and XOR checksum",\
- "modcscrc8-hist.txt" with lp lt 5 title "Four modifications and CRC8 checksum"
+ "nop-hist.txt" $using with lp lt 1 title "No modifications", \
+ "mod-hist.txt" $using with lp lt 2 title "Two modifications", \
+ "mod2-hist.txt" $using with lp lt 3 title "Four modifications", \
+ "modcsxor-hist.txt" $using with lp lt 4 title "Four modifications and XOR checksum",\
+ "modcscrc8-hist.txt" $using with lp lt 5 title "Four modifications and CRC8 checksum"