0) Calculate bend and FTABLE bend:
   elegant bend.ele
1) Process output:
   sddsxref CSBEND.out CSBEND.bun -take=[xy] -equate=particleID -reuse -edit=col,*,ei/0/
   sddsxref FTABLE.out CSBEND.bun -take=[xy] -equate=particleID -reuse -edit=col,*,ei/0/

   sddsplot -thick=2 -grap=sym,vary=sub,fill -title= -layout=2,2 \
      -col=particleID,'(x0,x)' -leg CSBEND.out -topl="CSBEND" -end -new \
      -col=particleID,'(y0,y)' -leg CSBEND.out -topl="CSBEND" -end -new \
      -col=particleID,'(x0,x)' -leg FTABLE.out -topl="FTABLE" -end -new \
      -col=particleID,'(y0,y)' -leg FTABLE.out -topl="FTABLE" -end -new \
      -dev=lpng -out=../ftable-bend.png

