  CONST
    fde$call_successful = 0;
    fde$terminal_disconnected = 1;
    fde$no_input_request = 2;
    fde$cursor_not_in_variable = 3;
    fde$more_errors_exist = 4;
    fde$unknown_form_name = 5;
    fde$form_compilation_errors = 6;
    fde$no_space_available = 7;
    fde$unsupported_terminal = 8;
    fde$invalid_form_identifier = 9;
    fde$invalid_user_entry = 10;
    fde$unknown_variable_name = 11;
    fde$too_many_integers = 12;
    fde$object_name_exists = 13;
    fde$work_area_invalid = 14;
    fde$invalid_x_form_position = 15;
    fde$invalid_y_form_position = 16;
    fde$invalid_width = 17;
    fde$invalid_height = 18;
    fde$invalid_message_form_name = 19;
    fde$invalid_occurrence = 20;
    fde$invalid_character_position = 21;
    fde$invalid_mode = 22;
    fde$invalid_state = 23;
    fde$invalid_variable_value = 24;
    fde$invalid_object_name = 25;
    fde$invalid_form_name = 26;
    fde$form_closed = 27;
    fde$too_many_attributes = 28;
    fde$invalid_attribute_name = 29;
    fde$too_many_screen_occurrence = 30;
    fde$no_form_definition = 31;
    fde$too_many_stored_occurrence = 32;
    fde$unknown_object_name = 33;
    fde$no_define_object_name = 34;
    fde$invalid_name = 35;
    fde$system_error = 36;
    fde$invalid_table_name = 37;
    fde$invalid_variable_name = 38;
    fde$form_pushed = 39;
    fde$unknown_table_name = 40;
    fde$no_table_variable_defined = 41;
    fde$no_forms_to_pop = 42;
    fde$only_character_data = 43;
    fde$only_noncharacter_data = 44;
    fde$form_definition_errors = 45;
    fde$no_forms_to_push = 46;
    fde$invalid_program_values = 47;
    fde$input_has_unknown_value = 48;
    fde$invalid_input_values = 49;
    fde$not_an_input_variable = 50;
    fde$cursor_not_in_form = 51;
    fde$form_has_no_variables = 52;
    fde$no_forms_to_show = 53;
    fde$form_not_scheduled = 54;
    fde$invalid_event_name = 55;
    fde$invalid_x_position = 56;
    fde$invalid_y_position = 57;
    fde$unknown_event_name = 58;
    fde$invalid_deck_name = 59;
    fde$invalid_record_name = 60;
    fde$object_exists = 61;
    fde$table_name_exists = 62;
    fde$object_overlays = 63;
    fde$too_many_reals = 64;
    fde$too_many_strings = 65;
    fde$no_object_at_position = 66;
    fde$array_too_small = 67;
    fde$string_too_small = 68;
    fde$variable_name_exists = 69;
    fde$form_already_added = 70;
    fde$invalid_event_active = 72;
    fde$cannot_update_opened_form = 73;
    fde$help_form_exists = 74;
    fde$error_form_exists = 75;
    fde$error_message_exists = 76;
    fde$help_message_exists = 77;
    fde$invalid_display_name = 78;
    fde$invalid_real_range = 79;
    fde$invalid_integer_range = 80;
    fde$unknown_integer_range = 81;
    fde$unknown_real_range = 82;
    fde$unknown_valid_string = 83;
    fde$display_name_exists = 84;
    fde$event_name_exists = 85;
    fde$unknown_display_name = 86;
    fde$too_many_form_names = 87;
    fde$too_many_form_objects = 88;
    fde$no_text_at_position = 89;
    fde$no_text_for_object = 90;
    fde$unknown_occurrence = 91;
    fde$no_string = 92;
    fde$range_overlap = 93;
    fde$no_comments_to_delete = 94;
    fde$object_occurrence_exists = 95;
    fde$no_string_specified = 96;
    fde$valid_string_exists = 97;
    fde$invalid_object_change = 98;
    fde$invalid_address = 99;
    fde$terminal_not_identified = 100;
    fde$invalid_form_language = 101;
    fde$invalid_form_area_key = 102;
    fde$form_name_required = 103;
    fde$no_forms_to_read = 104;
    fde$invalid_help_form_name = 105;
    fde$invalid_error_form_name = 106;
    fde$create_mark_invalid = 107;
    fde$delete_mark_invalid = 108;
    fde$no_mark_defined = 109;
    fde$area_cuts_object = 110;
    fde$copy_outside_form = 111;
    fde$move_outside_form = 112;
    fde$invalid_form_attribute = 113;
    fde$invalid_record_attribute = 114;
    fde$invalid_object_key = 115;
    fde$invalid_object_attribute = 116;
    fde$invalid_table_attribute = 117;
    fde$program_data_type = 118;
    fde$invalid_output_format_key = 119;
    fde$invalid_error_key = 120;
    fde$invalid_variable_attribute = 121;
    fde$invalid_help_key = 123;
    fde$feature_not_implemented = 124;
    fde$cannot_change_form = 125;
    fde$invalid_record_type = 126;
    fde$object_not_in_form  = 127;
    fde$invalid_form_processor = 128;
    fde$invalid_x_increment = 129;
    fde$invalid_y_increment = 130;
    fde$form_too_large_for_screen = 131;
    fde$invalid_text_processing = 132;
    fde$invalid_design_form = 133;
    fde$no_object_variable_defined = 134;
    fde$event_not_assigned = 135;
    fde$form_not_ended = 136;
    fde$invalid_event_form_name = 137;
    fde$invalid_event_form_key = 138;
    fde$form_already_open = 139;
    fde$invalid_event_label = 140;
    fde$form_requires_conversion = 141;
    fde$no_events_active = 142;
    fde$delete_outside_form = 143;
    fde$mark_outside_form = 144;
    fde$bad_data_value = 145;
    fde$record_defn_not_written = 146;
    fde$wrong_variable_type = 147;
    fde$invalid_variable_length = 148;
    fde$event_trigger_exists = 149;
    fde$form_already_combined = 150;
    fde$invalid_table_size = 151;
    fde$form_not_added = 152;
    fde$invalid_input_format_key = 153;
    fde$system_error_message = 154;
    fde$system_help_message = 155;
    fde$system_bad_key_message = 156;
    fde$width_and_height_required = 157;
    fde$no_variable_definiton = 158;
    fde$no_table_variable = 159;
    fde$no_variable_object = 160;
    fde$no_table_object = 161;
    fde$unequal_tbl_obj_width = 162;
    fde$error_input_conversion = 163;
    fde$error_output_conversion  = 164;
    fde$error_invalid_value = 165;
    fde$terminal_timed_out = 166;
    fde$object_width_required = 167;
    fde$no_forms_to_tab = 168;
    fde$cobol_19_fraction_digits = 169;
    fde$cobol_19_sig_digits = 170;
    fde$cobol_bad_overpunch_sign = 171;
    fde$cobol_bad_picture = 172;
    fde$cobol_bad_separate_sign  = 173;
    fde$cobol_binary_means_numeric = 174;
    fde$cobol_c_without_r = 175;
    fde$cobol_comp_1_means_no_pic = 176;
    fde$cobol_comp_2_means_no_pic = 177;
    fde$cobol_CR_DB_must_be_right = 178;
    fde$cobol_d_without_b = 179;
    fde$cobol_float_must_be_left = 180;
    fde$cobol_float_too_big = 181;
    fde$cobol_free_form_not_dest = 182;
    fde$cobol_illegal_char_entered = 183;
    fde$cobol_illegal_pic_char = 184;
    fde$cobol_insert_left_of_float = 185;
    fde$cobol_item_too_big = 186;
    fde$cobol_no_cr_or_db_now = 187;
    fde$cobol_no_plus_or_minus_now = 188;
    fde$cobol_no_multiple_points = 189;
    fde$cobol_no_rep_after_point = 190;
    fde$cobol_no_rep_for_cr_db = 191;
    fde$cobol_no_scientific = 192;
    fde$cobol_nonblk_outside_paren = 193;
    fde$cobol_nondigit_rep_count = 194;
    fde$cobol_not_both_v_and_p = 195;
    fde$cobol_not_9p9 = 196;
    fde$cobol_not_p9p = 197;
    fde$cobol_packed_means_num_pic = 198;
    fde$cobol_right_flt_means_all = 199;
    fde$cobol_s_must_be_first = 200;
    fde$cobol_sign_needs_s = 201;
    fde$cobol_too_many_vs  = 202;
    fde$cobol_trailing_sign_nonblk = 203;
    fde$cobol_two_points_entered = 204;
    fde$cobol_two_floating = 205;
    fde$cobol_two_signs = 206;
    fde$cobol_two_signs_entered = 207;
    fde$cobol_unbal_parens = 208;
    fde$cobol_unknown_usage = 209;
    fde$cobol_wrong_sign_vs_usage = 210;
    fde$cobol_usage_size_too_big = 211;
    fde$too_many_fraction_digits = 213;
    fde$too_many_significant_digits = 214;
    fde$invalid_picture = 215;
    fde$binary_requires_numeric = 216;
    fde$picture_invalid_for_comp_1 = 217;
    fde$picture_invalid_for_comp_2 = 218;
    fde$CR_DB_must_be_rightmost = 219;
    fde$floating_symbols_invalid  = 220;
    fde$invalid_picture_character = 221;
    fde$insertion_symbols_invalid = 222;
    fde$picture_item_too_big = 223;
    fde$too_many_decimal_points = 224;
    fde$no_repetition_after_point = 225;
    fde$no_repetition_for_cr_db = 226;
    fde$nondigit_repetition = 227;
    fde$v_and_p_invalid  = 228;
    fde$p_between_9_invalid = 229;
    fde$9_between_p_invalid = 230;
    fde$packed_requires_numeric = 231;
    fde$invalid_right_floating = 232;
    fde$s_must_be_first = 233;
    fde$picture_requires_sign = 234;
    fde$too_many_vs = 235;
    fde$too_many_floating_symbols  = 236;
    fde$too_many_sign_symbols = 237;
    fde$unbalanced_parentheses = 238;
    fde$invalid_usage = 239;
    fde$invalid_sign_for_usage = 240;
    fde$input_format_invalid_cobol = 241;
    fde$output_format_invalid_cobol = 242;
    fde$unexpected_call_to = 243;
    fde$form_not_displayed = 244;
    fde$cobol_invalid_manage_form = 245;
    fde$invalid_cobol_data_type = 246;
    fde$invalid_cobol_category = 247;
    fde$cobol_destination_invalid = 248;
    fde$cobol_source_invalid = 249;
    fde$object_size_cobol_mismatch = 250;
    fde$incompatible_display_clause = 251;
    fde$incompatible_program_clause = 252;
    fde$b_invalid_for_picture = 253;
    fde$cobol_too_many_digits = 254;
    fde$too_many_digits = 255;
    fde$cobol_p_not_supported = 256;
    fde$p_invalid_for_picture = 257;
