- 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 there have been any deflate() calls since the
+ state was initialized or reset, 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().