function define ()
{
if(key_cud==1)
{
new_key_str="DOWN";
return(80);
}

function get_key(get_var)
{
if(key_var==72)
{
return(key_cuu);
}
}


define my_key_up,key_cuu;
var_info up_key_var=17;

These are the only three instances where key_cuu is used throughout the script.

As far as I can tell, none of them have =, just ==. Thank you for helping me so far though.