/// <summary>
/// Writes channels having the specified index key.
/// </summary>
private static void WriteCnls(StreamWriter writer, ITableIndex index, int indexKey)
{
List <int> keys = new(index.SelectItemKeys(indexKey));
writer.WriteLine(keys.Count > 0
? ExtensionPhrases.ChannelsCaption + keys.ToRangeString()
: ExtensionPhrases.NoChannels);
}
