que signifie le mot "blit" pour meilleur compréhension de la documentation pygame

Voilà étant passablement mauvais en anglais, je me suis lancé dans la traduction du module pygame à l'aide de mes connaissances, d'un dictionnaire et de google traduction.
seulement me voici confronté au mot blit qui revient assez souvent et qui ne se trouve dans aucun de mes 3 répértoires.
Quelqu'un en connaîtrait-il le sens ?
Voici un exemple d'où il apparaît :
"These functions mainly effect how the Surface is blitted to other Surfaces.
The blit routines will attempt to use hardware acceleration when possible, otherwise they will use highly optimized software blitting methods."

j'ai cherché des synonymes à "copier", "calquer", et je trouve "transcrire" est se qui se rapproche le mieux ...

Dans l'idée: imprimer, plaquer, placarder, copier, dessiner (-sur)

Et google dit:

Citation:

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The origin of the term "blit" is also rather interesting. This was originally BitBlt, an abbreviation of BITmap BLock Transfer, which was a function designed (possibly) by the people at Xerox who did so much of the pioneering work on graphics display systems, and subsequently copied by virtually everybody doing computer graphics (the Microsoft Windows GDI still provides a BitBlt function with identical functionality to the original). This routine was a workhorse for all sorts of drawing operations, basically copying bitmap graphics from one place to another, but including a number of different ROP modes (Raster OPerations) for doing things like XOR, inverting pixels, etc. A whole family of related words grew up around the BitBlt function, but "blt" is impossible to speak (try saying "bltter" or "bltting" :-) so people added the vowel to make it easier to pronounce.

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- W

merci pour vos réponse :ccool: