D.M., H.J.S., S.T.T.L., and R.I.P. on tombstones generally relate to what theme?

The initials D.M. (Deo Memoria)—meaning "to the memory of God," H.J.S. (Hic Jacet Sepultus)—translating to "here lies buried," S.T.T.L. (Siste Viator, Templa Legis—as a reminder, "stop traveler, and read"), and R.I.P. (Requiescat in Pace), which translates to "rest in peace," are all traditional Latin inscriptions commonly found on tombstones. These phrases evoke the concept of remembrance and memorialization of the deceased, underscoring the theme of death. Tombstones serve as markers of the end of life and honor the memories of those who have passed, which aligns perfectly with the theme of death as central to these inscriptions. Therefore, the primary theme represented by these abbreviations is indeed death.