- strategy is changed, then the input available so far is compressed with the
- old level and strategy using deflate(strm, Z_BLOCK). There are three
- approaches for the compression levels 0, 1..3, and 4..9 respectively. The
- new level and strategy will take effect at the next call of deflate().
+ strategy is changed, and if any input has been consumed in a previous
+ deflate() call, then the input available so far is compressed with the old
+ level and strategy using deflate(strm, Z_BLOCK). There are three approaches
+ for the compression levels 0, 1..3, and 4..9 respectively. The new level
+ and strategy will take effect at the next call of deflate().