function brief_return_explain1_html() { html = ''; html = html + ''; html = html + ''; html = html + ' # unique results'; html = html + ' '; html = html + ''; html = html + ''; html = html + ''; html = html + ''; html = html + ' '; html = html + ' '; html = html + ''; html = html + '
'; html = html + ' '; html = html + '

The unique result number counts the unique titles found by your search.

'; html = html + ' '; html = html + '

Many libraries own exactly the same book or item as another library. If the item is the same, it is counted only once.

'; html = html + ''; html = html + '

TAL Online calculates the number of unique titles when the total search result size is less than 500.

'; html = html + ''; html = html + ' '; html = html + ' '; html = html + '

The maximum number of result that TAL Online can sort is 200 records.

'; html = html + ''; html = html + ' '; html = html + '
'; html = html + ''; html = html + ''; return html; }