settings object
This method will check to see if a particular value exists in your game's store in the Windows registry.
bool exists(string value_name)
Parameters:
value_name
The name of the value to look for.
Return value:
true if the value was found, false if it was not or if an error occured.
Remarks:
None.
Example:

    // Delete our music_volume value from the registry if it exists.

    void main()
    {
    settings game_data;
    bool success=game_data.setup("Testtime Interactive", "Bonebreaker", false);
    if(!success)
    {
    alert("Error", "Could not access the registry.");
    exit();
    }
    if(!game_data.exists("music_volume"))
    {
    alert("Error", "Could not delete music_volume. The specified value does not exist.");
    exit();
    }
    success=game_data.remove_value("music_volume");
    if(!success)
    {
    alert("Error", "Could not delete music_volume.");
    exit();
    }
    }