Experience with an Extensible Language An operational extensible language system is described. The system and its base language are appraised with respect to efficiency, flexibility, and utility for different categories of users. CACM January, 1970 Irons, E. T. programming languages, extensible, compiler, bootstrapping, ambiguity 4.12 4.22 CA700105 JB February 14, 1978 2:02 PM 249 4 2126 254 4 2126 272 4 2126 1046 4 2126 1102 4 2126 1105 4 2126 1109 4 2126 1139 4 2126 1140 4 2126 1140 4 2126 1188 4 2126 1234 4 2126 1263 4 2126 1265 4 2126 1306 4 2126 1464 4 2126 1491 4 2126 1496 4 2126 1693 4 2126 1767 4 2126 1781 4 2126 1781 4 2126 1781 4 2126 1787 4 2126 1824 4 2126 1824 4 2126 1861 4 2126 1945 4 2126 1949 4 2126 321 4 2126 2059 4 2126 2126 4 2126 2126 4 2126 2126 4 2126 2126 4 2126 2126 4 2126 2317 4 2126 2546 4 2126 435 4 2126 437 4 2126 463 4 2126 464 4 2126 483 4 2126 491 4 2126 2732 4 2126 560 4 2126 583 4 2126 584 4 2126 3073 4 2126 627 4 2126 631 4 2126 631 4 2126 632 4 2126 642 4 2126 644 4 2126 653 4 2126 653 4 2126 680 4 2126 680 4 2126 691 4 2126 761 4 2126 762 4 2126 763 4 2126 763 4 2126 795 4 2126 799 4 2126 123 4 2126 140 4 2126 919 4 2126 945 4 2126 989 4 2126 196 5 2126 1614 5 2126 1693 5 2126 2126 5 2126 2126 5 2126 2126 5 2126 2317 5 2126 2546 5 2126 404 5 2126 823 5 2126 1198 6 2126 1477 6 2126 1491 6 2126 1572 6 2126 1693 6 2126 1749 6 2126 1753 6 2126 1781 6 2126 2126 6 2126 2126 6 2126 2148 6 2126 404 6 2126 3184 6 2126