/* symbolic constants */ [true, false, unknown, inf, minf, ind, und, %e, %i, %pi, %phi, %gamma]; /* built-in variables */ [_, __, %, %%, linel, simp, dispflag, stringdisp, lispdisp, %edispflag]; /* built-in functions */ [sin, cosh, exp, atan2, sqrt, log, struve_h, sublist_indices, read_array]; /* user-defined symbols */ [foo, ?bar, baz%, quux_mumble_blurf];