[Users] Question about SummationByParts

[Heeil Kim]

Hi all,

I'd like to know the effect of SummationByParts when it is activated.
If it's activated, does it touch by default some finite-differencing
scheme? For example, In qc0-mclachlan.par, SummationByParts is
activated with 4th order, does it mean all 1st derivatives are
replaced with SBP? Or in SBP in qc0 does nothing because it's never
been inherited by other thorns?

Cheers,

Hee Il