The theme script that handles the NextScrollSpeed and PreviousScrollSpeed codes uses SetPlayerOptions, which clears all player options not specified in the string argument, including the default modifiers from the preferences and the theme. I would expect these codes to change only the speed modifier.
The theme script that handles the NextScrollSpeed and PreviousScrollSpeed codes uses SetPlayerOptions, which clears all player options not specified in the string argument, including the default modifiers from the preferences and the theme. I would expect these codes to change only the speed modifier.