kind=defined
names=BEST_COMPRESSION,BEST_SPEED,DEFAULT_COMPRESSION,NO_COMPRESSION
visibility=public

--- NO_COMPRESSION
--- BEST_SPEED
--- BEST_COMPRESSION
--- DEFAULT_COMPRESSION

[[m:Zlib::Deflate.new]] や [[m:Zlib::Deflate#deflate]] 等に渡す、
圧縮レベルを表す整数。

