A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are: 08(08.01.2; 08.06.3; 08.12.1) ASTRONOMY AND ASTROPHYSICS 30.7.1996 Effect of chromospheric activity on the mean colours of late­type stars P.J. Amado and P.B. Byrne Armagh Observatory, College Hill, Armagh BT61 9DG, N. Ireland Received; accepted Abstract. ... Effect of chromospheric activity on the mean colours of late­type stars for evidence of an effect of activity on the mean global photospheric colours. ...

Routines can now be called with keyword arguments and can use default arguments, that means that some arguments can be given with keywords instead of position and some do not have to be given at all, in which case a standard or default value is used. ... IMPLICIT NONE INTERFACE SUBROUTINE SOLVE (A, B, N) INTEGER, INTENT (IN) : : N REAL, INTENT(OUT) : : A REAL, INTENT(IN), OPTIONAL : : B END SUBROUTINE SOLVE END INTERFACE REAL X ! ... You will use keyword arguments and default arguments so that . ...