Function DbClearIndex() Foundation
Closes all index files in a work area.
DbClearIndex() --> NIL
The return value of DbClearIndex() is always NIL.
The function DbClearIndex() exists for compatibility reasons. Instead of DbClearIndex(), the function OrdListClear() should be used.
The index function DbClearIndex() closes all index files in a work area. When the function is used without the alias operator, the indexes are closed in the current work area. Open index buffers are written into the index files prior to closing.
The command SET INDEX with no specified index file can be used instead of DbClearIndex(). SET INDEX is only effective in the current work area.
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