Adding the abstain option, in addition to “In Favor” and “Against” allows voters and delegates to participate in voting without having to take a side.
There is no overall cost to the DAO.
Link to the full proposal: https://forum.apecoin.com/t/aip-200-add-abstain-option-to-snapshot/10329
The AIP implementation is administered by the Ape Foundation. Implementation may be immaterially or materially altered to optimise for security, usability, to protect APE holders, and otherwise to effect the intent of the AIP. Any material deviations from an AIP, as initially approved, will be disclosed to the APE holder community.