User-Supplied Subroutines.

  The purpose of each of the user-supplied subroutines in the file xxx.f is described below.

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FUNC :  defines the function f(u,p) in (2.1), (9.1), or (2.3).

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STPNT :  This subroutine is called only if IRS=0 (see Section 6.8.5 for IRS), which typically is the case for the first run. It defines a starting solution (u,p) of (2.1) or (9.1). The starting solution should not be a branch point.
(Demos ab, exp, frc, lor.)

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BCND :  A subroutine BCND that defines the boundary conditions.
(Demo exp, kar.)

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ICND :  A subroutine ICND that defines the integral conditions.
(Demos int, lin.)

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FOPT :  A subroutine FOPT that defines the objective functional.
(Demos opt, ops.)

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PVLS :  A subroutine PVLS for defining ``solution measures''.
(Demo pvl.)