/**
* g_io_channel_set_line_term:
* @channel: a #GIOChannel
- * @line_term: The line termination string. Use %NULL for autodetect.
- * Autodetection breaks on "\n", "\r\n", "\r", "\0", and
- * the Unicode paragraph separator. Autodetection should
- * not be used for anything other than file-based channels.
+ * @line_term: (allow-none): The line termination string. Use %NULL for
+ * autodetect. Autodetection breaks on "\n", "\r\n", "\r", "\0",
+ * and the Unicode paragraph separator. Autodetection should not be
+ * used for anything other than file-based channels.
* @length: The length of the termination string. If -1 is passed, the
* string is assumed to be nul-terminated. This option allows
* termination strings with embedded nuls.
/**
* g_io_channel_set_encoding:
* @channel: a #GIOChannel
- * @encoding: the encoding type
+ * @encoding: (allow-none): the encoding type
* @error: location to store an error of type #GConvertError
*
* Sets the encoding for the input/output of the channel.