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An arrow pushing a point inward and inverting it.
Also known as: Sink fold arrow, Push in fold
In the Yoshizawa-Randlett notation a sink fold arrow instructs that a point be pushed inward so it inverts into the body of the model.
Instructs that a point be pushed inward so it inverts into the model.
Contexts: History
Uses a hollow arrowhead where an ordinary fold uses a solid one, the head shape carrying the difference between folding and pushing.
Contexts: History
A hollow arrow pointing into the model at the point to be inverted, sometimes drawn as an open square arrowhead.
A fuller structured visual breakdown is not yet documented for this symbol.