UFL input for the auto adaptive Poisson problem

UFL code:

element = FiniteElement("CG", triangle, 1)
u = TrialFunction(element)
v = TestFunction(element)

f = Coefficient(element)
g = Coefficient(element)

a = dot(grad(u), grad(v))*dx()
L = f*v*dx() + g*v*ds()
M = u*dx()

Before the form file can be used in the C++ program, it must be compiled using FFC by running (on the command-line):

ffc -l dolfin -e AdaptivePoisson.ufl

Parameter -e ensures that a code for forms used for error control is generated.