Senegal 1940-61, FR civil engineer, built roads, bridges, dams, locks; taught mechanics in 2 FR engineer univs (ENSA LYON, ENSMSE); wrote, alone, large apps or modules for high speed infra layout, structural analysis, incl high-quality ground components (e.g. Time or File System, 2D mesher, Fresnel Integrals highly improved) and highly user-friendly and reliable interface; raised 4 kids (all in high positions now)