Each parameter has a master offset associated with it. The master offset is added to its corresponding parameter, and shifts it by some amount, which can be positive, negative, or zero. If the parameter is being modulated by an oscillator, the master offset shifts the modulated value.
Master offsets are applied after all other processing, just before the frame is drawn, and they affect the animation at all times, regardless of what patch is loaded, and regardless of whether you're viewing the document or the mix. For a schematic, see Signal Flow.
The master offsets can be edited via the parameters dialog; to do this, set the edit selection to "Master Offsets". The master offsets can also be changed via MIDI: when a controller is assigned to a parameter, it actually modifies the parameter's master offset. To zero all of the master offsets at once, use Edit/Zero Controllers or Shift+Z.
Master offsets are saved as part of the playlist. If any master offsets are non-zero while you're editing a patch, the patch may not look the same when it's inserted into a different playlist. To avoid confusion, keep master offsets zero while editing patches. To save the current mix as a new patch, including the master offsets, use File/Save Mix or Shift+S.