soft constraints penalty function [>>> <<<] error messages omitted data value default symbol data value, omitted default symbol ["].\|.\|.["], ['].\|.\|.['] quotes [..] arithmetic progression [=] attribute defined variables [.body] constraint body built-in function function Cartesian product cross product conditional expression logical expression, [if]-[then]-[else] conditional declaration [if] indexing expression [.dat] file file [.dual] dual value Lagrange multiplier dual variables index dummy index iterated operator operator comparison operators relational operators [maximize] objective declaration [minimize] objective declaration model file file [.mod] file file price, shadow dual value problem model %also [.rc] reduced cost data reset [reset] [data] command scaling along arc loss in network flow scope dummy index %also set of sets indexed collection shadow price dual value marginal~value dual value simplification of expression presolve %also starting guess initial values of variables [subject] [to] constraint declaration [s.t.] constraint declaration symmetric difference [symdiff] set difference [diff], [symdiff] syntax error error messages messages error messages space requirement memory use viewing data [display] command [;] semicolon statement terminator array one-dimensional set, parameter vector one-dimensional set, parameter matrix two-dimensional set, parameter command mode model mode [>], [>>] output to file redirection output to file qualified name [.] suffix member, dummy dummy index membership test [in], [within] subset test [in], [within] such-that condition logical condition set intersection [inter] intersection, set [inter] slope piecewise-linear expression breakpoint piecewise-linear expression command statement %also statement command, declaration %also declaration statement %also traffic flow maximum flow model flow network flow roll trim problem cutting-stock problem argument command-line argument zero-one programming integer programming reading files [model], [data] file inclusion [model], [data] [include] [model], [data] %also transposition table transposition