NAG Library Manual, Mark 28.7
Interfaces:  FL   CL   CPP   AD 
NAG FL Interface Introduction
Example description

G08AHF Example Program Data
 16  23  'L'                                     :: N1,N2,TAIL
 13.0  6.0 12.0  7.0 12.0  7.0 10.0  7.0
 10.0  7.0 16.0  7.0 10.0  8.0  9.0  8.0         :: End of X
 17.0  6.0 10.0  8.0 15.0  8.0 15.0 10.0
 15.0 10.0 14.0 10.0 14.0 11.0 14.0 11.0
 13.0 12.0 13.0 12.0 13.0 12.0 12.0              :: End if Y