{
    /**
     * option value for <code>ubidi_setReorderingOptions</code>:
     * disable all the options which can be set with this function
     * @see ubidi_setReorderingOptions
     * @stable ICU 3.6
     */
    UBIDI_OPTION_DEFAULT = 0,

    /**
     * option bit for <code>ubidi_setReorderingOptions</code>:
     * insert Bidi marks (LRM or RLM) when needed to ensure correct result of
     * a reordering to a Logical order
     *
     * <p>This option must be set or reset before calling
     * <code>ubidi_setPara</code>.</p>
     *
     * <p>This option is significant only with reordering modes which generate
     * a result with Logical order, specifically:</p>
     * <ul>
     *   <li><code>#UBIDI_REORDER_RUNS_ONLY</code></li>
     *   <li><code>#UBIDI_REORDER_INVERSE_NUMBERS_AS_L</code></li>
     *   <li><code>#UBIDI_REORDER_INVERSE_LIKE_DIRECT</code></li>
     *   <li><code>#UBIDI_REORDER_INVERSE_FOR_NUMBERS_SPECIAL</code></li>
     * </ul>
     *
     * <p>If this option is set in conjunction with reordering mode
     * <code>#UBIDI_REORDER_INVERSE_NUMBERS_AS_L</code> or with calling
     * <code>ubidi_setInverse(TRUE)</code>, it implies
     * option <code>#UBIDI_INSERT_LRM_FOR_NUMERIC</code>
     * in calls to function <code>ubidi_writeReordered()</code>.</p>
     *
     * <p>For other reordering modes, a minimum number of LRM or RLM characters
     * will be added to the source text after reordering it so as to ensure
     * round trip, i.e. when applying the inverse reordering mode on the
     * resulting logical text with removal of Bidi marks
     * (option <code>#UBIDI_OPTION_REMOVE_CONTROLS</code> set before calling
     * <code>ubidi_setPara()</code> or option <code>#UBIDI_REMOVE_BIDI_CONTROLS</code>
     * in <code>ubidi_writeReordered</code>), the result will be identical to the
     * source text in the first transformation.
     *
     * <p>This option will be ignored if specified together with option
     * <code>#UBIDI_OPTION_REMOVE_CONTROLS</code>. It inhibits option
     * <code>UBIDI_REMOVE_BIDI_CONTROLS</code> in calls to function
     * <code>ubidi_writeReordered()</code> and it implies option
     * <code>#UBIDI_INSERT_LRM_FOR_NUMERIC</code> in calls to function
     * <code>ubidi_writeReordered()</code> if the reordering mode is
     * <code>#UBIDI_REORDER_INVERSE_NUMBERS_AS_L</code>.</p>
     *
     * @see ubidi_setReorderingMode
     * @see ubidi_setReorderingOptions
     * @stable ICU 3.6
     */
    UBIDI_OPTION_INSERT_MARKS = 1,

    /**
     * option bit for <code>ubidi_setReorderingOptions</code>:
     * remove Bidi control characters
     *
     * <p>This option must be set or reset before calling
     * <code>ubidi_setPara</code>.</p>
     *
     * <p>This option nullifies option <code>#UBIDI_OPTION_INSERT_MARKS</code>.
     * It inhibits option <code>#UBIDI_INSERT_LRM_FOR_NUMERIC</code> in calls
     * to function <code>ubidi_writeReordered()</code> and it implies option
     * <code>#UBIDI_REMOVE_BIDI_CONTROLS</code> in calls to that function.</p>
     *
     * @see ubidi_setReorderingMode
     * @see ubidi_setReorderingOptions
     * @stable ICU 3.6
     */
    UBIDI_OPTION_REMOVE_CONTROLS = 2,

    /**
     * option bit for <code>ubidi_setReorderingOptions</code>:
     * process the output as part of a stream to be continued
     *
     * <p>This option must be set or reset before calling
     * <code>ubidi_setPara</code>.</p>
     *
     * <p>This option specifies that the caller is interested in processing large
     * text object in parts.
     * The results of the successive calls are expected to be concatenated by the
     * caller. Only the call for the last part will have this option bit off.</p>
     *
     * <p>When this option bit is on, <code>ubidi_setPara()</code> may process
     * less than the full source text in order to truncate the text at a meaningful
     * boundary. The caller should call <code>ubidi_getProcessedLength()</code>
     * immediately after calling <code>ubidi_setPara()</code> in order to
     * determine how much of the source text has been processed.
     * Source text beyond that length should be resubmitted in following calls to
     * <code>ubidi_setPara</code>. The processed length may be less than
     * the length of the source text if a character preceding the last character of
     * the source text constitutes a reasonable boundary (like a block separator)
     * for text to be continued.<br>
     * If the last character of the source text constitutes a reasonable
     * boundary, the whole text will be processed at once.<br>
     * If nowhere in the source text there exists
     * such a reasonable boundary, the processed length will be zero.<br>
     * The caller should check for such an occurrence and do one of the following:
     * <ul><li>submit a larger amount of text with a better chance to include
     *         a reasonable boundary.</li>
     *     <li>resubmit the same text after turning off option
     *         <code>UBIDI_OPTION_STREAMING</code>.</li></ul>
     * In all cases, this option should be turned off before processing the last
     * part of the text.</p>
     *
     * <p>When the <code>UBIDI_OPTION_STREAMING</code> option is used,
     * it is recommended to call <code>ubidi_orderParagraphsLTR()</code> with
     * argument <code>orderParagraphsLTR</code> set to <code>TRUE</code> before
     * calling <code>ubidi_setPara</code> so that later paragraphs may be
     * concatenated to previous paragraphs on the right.</p>
     *
     * @see ubidi_setReorderingMode
     * @see ubidi_setReorderingOptions
     * @see ubidi_getProcessedLength
     * @see ubidi_orderParagraphsLTR
     * @stable ICU 3.6
     */
    UBIDI_OPTION_STREAMING = 4
} UBiDiReorderingOption;