U+0597 Hebrew Accent Revia

The Wikipedia has the following information about this codepoint:

Revia (Hebrew: רְבִיעַ, [r^əviaʕ]) is a cantillation mark commonly found in the Torah, Haftarah, and other biblical texts.

It is commonly explained as being the Aramaic equivalent of Hebrew רְבִיעִי Revi'i, meaning 'fourth' or 'quarter'., and for that reason is sometimes called Revi'i. However, this is probably a folk etymology: the more likely meaning in Aramaic is "crouching" or "lying", referring to its position vertically above the word.

Revia is considered to have medium strength. It is stronger than a Pashta or Tevir, but weaker than a Zakef or Tifcha.

Revia can occur either by itself, or following one or two Munachs. When there are two Munachs prior to a Revia, the first Munach has a long melody, and the second one is short. When there is one Munach, it is short.

Based on its translation as fourth, in printed texts it is represented by a diamond-shaped mark. However in manuscripts it is just a dot.