"predicate", var_is_numeric, NULL);
set_dest_model (GTK_TREE_VIEW (dest), dict);
psppire_selector_set_subjects (PSPPIRE_SELECTOR (selector),
"predicate", var_is_numeric, NULL);
set_dest_model (GTK_TREE_VIEW (dest), dict);
psppire_selector_set_subjects (PSPPIRE_SELECTOR (selector),