⟨LRM⟩
The invisible compass that returns a passage to left-to-right reading.
When Latin text and Arabic or Hebrew text share a line, the punctuation at the borders belongs to no one, and the bidirectional algorithm chooses for it — sometimes badly. The LRM is a bodiless character whose only property is “I am left-to-right”.
Placed beside the ambiguous sign, it anchors the neighborhood: a “C++” quoted in an Arabic paragraph stops turning into “++C”. The entity is ‎.
Without LRM: in Arabic, 'C++' may appear as '++C'
With LRM: C++‎ — the mark anchors the punctuation leftward