The Israeli Parliament (the Knesset) also allows an explicit "abstain" vote. While there's no requirement of quorum, and certain laws are known to have passed with a handful of MKs present, the abstain vote is important for a different reason. The Israeli government is based on a parliamentary coalition, and coalition members may be required to follow the guidance of the coalition coordinator (usually under the directive of the Prime Minister) on how to vote on laws that are important to the government. Those who vote against the guidance (either for the law the government opposes or against the law the government supports) risk disciplinary actions from their respective fraction leaders.
Often times, coalition MKs who don't want to vote with the government prefer to just "miss" the vote, but that too can lead to certain disciplinary actions (this time from the Knesset administrative leadership) if too many votes are missed.
Abstaining would not violate the coalition guidance, doesn't count as a missed attendance, and allows MKs to express their disagreement while avoiding the immediate negative repercussions.