[solver-interfaces-tri{-mg-porder}]

Parameterises the triangular interfaces, or if -mg-porder is suffixed the triangular interfaces at multi-p level order, with

1. flux-pts — location of the flux points on a triangular interface:

   alpha-opt | williams-shunn

2. quad-deg — degree of quadrature rule for anti-aliasing on a triangular interface:

   int

3. quad-npts — number of points of the quadrature rule for anti-aliasing on a triangular interface:

   int

4. quad-pts — name of quadrature rule for anti-aliasing on a triangular interface:

   williams-shunn | witherden-vincent

Example:

[solver-interfaces-tri]
flux-pts = williams-shunn
quad-deg = 10
quad-pts = williams-shunn