H (half-adjust) operation extender, 193, 249
Halt (H) indicators, 15
header (control) specification, 4, 9, 38–43
hexadecimal literal value, 23, 24
hierarchy of modules, 451, 451
hierarchy of subprocedures, 423
*HIVAL figurative constant, 25, 575–576
*HMS, 191, 307, 574
HOME, 22
host variables, data areas and, 469
%HOURS, 121
*HOURS, 191, 211, 276