grf {
grfid : "ZUU0";
name : string(STR_GRF_NAME);
desc : string(STR_GRF_DESCRIPTION);
version: 1;
min_compatible_version: 1;
}
item (FEAT_INDUSTRIES, item_industry_coal_mine) {
property {
substitute: 00; // coal mine
override: 00;
}
graphics {
random_prod_change: STORE_PERM(extra_callback_info_1, 1);
}
}
# nmlc output:
# ERROR: "main.nml", line 16: Unrecognized identifier 'extra_callback_info_1' encountered