Active period

What it is

An attack hitbox is considered “active” for however many frames it lasts and can theoretically do its attack. Before this, some startup time is almost always required, and after this comes recovery time.

Further reading

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Creative Commons 3.0.
Based off the article on the wiki, edited on or before 5 January 2009.
Unofficial translation published by BRPXQZME / Alfie Parthum 1 February 2009. No unauthorized redistribution permitted.