J_LOC JETFAN JMON JMPBCK
(see for example, JMON integer, Group 6)
------ PIL integer; default=1; group 6 ----
JMON....index for specifying J location ( in BFC nomenclature ) at which the coordinates XC(IMON,JMON,KMON), YC(IMON,JMON,KMON), ZC(IMON,JMON,KMON) are displayed for sweep-by-sweep monitoring in the course of grid generation by the "Laplace solver", MAGIC(L).
------- PIL logical; groups 1 & 19 ------
JMPBCK... is used to activate a facility for adjusting the relaxation parameters (DTFALS) in response to variations in the residuals.
See the help and encyclopaedia entries on EXPERT, and GREX3 for further information.