19,22c19,28
<     --fast(-#)      # Regulate the speed of compression using the specified digit  # , where  -1 or…
<     -1      # or
<     -9      # or
<     -6      # (that is, biased towards high compression at expense of speed)
---
>     --fast: int      # the fastest compression method (less compression)
>     -1      # same as --fast
>     -2
>     -3
>     -4
>     -5
>     -6
>     -7
>     -8
>     -9      # same as --best
26c32
<     --best #  Regulate the speed of compression using the specified digit  # , where  -1 or… (synonym of --fast)
---
>     --best       # indicates the slowest compression method (best compression)