Automatically insert a word break around characters in the Chinese, Japanese, and Korean Unicode ranges. This makes it possible to search text in documents that do not contain word breaks. Like the hyphenation setting, this setting is kept in the alphabet for an index and so will only change when an index is created. See Alphabet Settings.
By default, dtSearch indexes numbers both as text and as numeric values, which is necessary for numeric range searching. Use this flag to suppress indexing of numeric values in applications that do not require numeric range searching. This setting can reduce the size of the index by about 20%.
Suppress automatic generation of xfirstword and xlastword. By default, xfirstword is defined to be the first word in each document, and xlastword is defined to be the last word in each document. These words are generated when an index is created, so this flag must be set during indexing to suppress xlastword and xfirstword.