@@ -443,7 +443,7 @@ The following file formats are supported
443443 | :sl:`get the playback volume`
444444| :sg:`get_volume() -> value`
445445
446- Return a value from 0.0 to 1.0 representing the volume for this Sound.
446+ Return a value from 0.0 to 1.0 (inclusive) representing the volume for this Sound.
447447
448448 .. ## Sound.get_volume ##
449449
@@ -484,7 +484,7 @@ The following file formats are supported
484484| :sg:`Channel(id) -> Channel`
485485
486486 Return a Channel object for one of the current channels. The id must be a
487- value from 0 to the value of ``pygame.mixer.get_num_channels() ``.
487+ value from 0 up to, but not including, ``pygame.mixer.get_num_channels() ``.
488488
489489 The Channel object can be used to get fine control over the playback of
490490 Sounds. A channel can only playback a single Sound at time. Using channels
@@ -589,7 +589,7 @@ The following file formats are supported
589589
590590 Set the volume (loudness) of a playing sound. When a channel starts to
591591 play its volume value is reset. This only affects the current sound. The
592- value argument is between 0.0 and 1.0.
592+ value argument is in the range of 0.0 to 1.0 (inclusive) .
593593
594594 If one argument is passed, it will be the volume of both speakers. If two
595595 arguments are passed and the mixer is in stereo mode, the first argument
@@ -615,7 +615,8 @@ The following file formats are supported
615615 | :sl:`get the volume of the playing channel`
616616| :sg:`get_volume() -> value`
617617
618- Return the volume of the channel for the current playing sound. This does
618+ Return the volume of the channel for the current playing sound
619+ in the range of 0.0 to 1.0 (inclusive). This does
619620 not take into account stereo separation used by
620621 :meth: `Channel.set_volume `. The Sound object also has its own volume
621622 which is mixed with the channel.
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