readingAreaOffsetBottom

This option describes how far from the bottom of the renderer's visible area the Reading Area will end.

The Reading Area defines the part of the renderer's visible area that will be used for calculations related to Reading Positions. If a SyncMediaPlayer is attached to the ReaderView and managed ReaderView synchronization is enabled, the Reading Area also has an impact on how the renderer synchronizes its visible content with the SyncMediaPlayer.

See ReaderView.getReadingPosition() for how the Reading Position relates to the Reading Area.

When SyncMediaPlayer playback causes the Reading Position to change, the renderer will, if necessary, automatically scroll to keep the Reading Position inside the Reading Area.

Any values lower than 0 will be treated as 0, and any values higher than 30% will be treated as 30%. If a PERCENTAGE value is set, the value will be a percentage of the renderer element's clientHeight.

Defaults to 20%