What are the mudra of left hand on top and right hand on top when meditating?

This is usually done with a fixed seal, a seal that symbolizes entering concentration. Also known as Samadhi Seal and Samadhi Seal. According to the type, it can be divided into Dharma-definition Seal, Dharma-holding Seal, Wonderful Observation Wisdom Seal, etc. Left hand on top and right hand on top? Is it divided into men and women? Men ----- right hand on top, women - left hand on top