Note that the compression level may be changed at any time. The new compression level will only apply to newly written objects. The best buffer size is estimated based on the current mean value and standard deviation of all objects written so far to this file. The FREE list consists of a chain of consecutive free segments on the file. This is the basic low level read operation.
Returns kTRUE in case of failure.
Seek to a specific position in the file. Pos it either kBeg , kCur or kEnd . 9 maximal compression level but slow. Note that the compression level may be changed at any time. The new compression level will only apply to newly written objects.