What it does
Yetiv performs the same disjunctive job as Pashta, but on certain short, single-syllable words where Pashta would be visually awkward. Like Pashta, it points toward an oncoming Zakef Katan.
Where it appears
Far less common than Pashta. Yetiv replaces Pashta on certain monosyllabic or near-monosyllabic words where the accent rules require a different marking. Look for it on short, one-syllable words.
How to remember it
Yetiv means "seated" or "resting." The mark is a small diagonal slash below the right side of the first letter, the inverse of where Pashta lives. Think of it as Pashta's shorter, "seated" cousin.
Example from the Torah
Bereishis 7:1
Yetiv on a short word like בֹּא ("come") substitutes for Pashta, which would have nowhere to land on such a short word.
Hear the melody
A synthesized rendering of the melodic shape, not a vocal recording. For a baal koreh's voice on a full aliyah, PocketTorah is a great free resource.
Hand signal (simanim)
Often confused with
Same disjunctive function as Pashta. Pashta lives above the last letter; Yetiv lives below the first letter and is reserved for certain short words.