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					Originally Posted by sharpshin  @Z_P:
 HUD = Heads Up Display, a semi-transparent overlay over your normal visual field, currently used by military pilots, but a frequent SF construct too.
 
 Grepping = verbification of Unix grep command for searching text for regular expressions.
 
 I think the others in your list are more specific to "Down and Out..."; as I remember they may be explained later.  A lot of the context may remain mysterious if you haven't been to DisneyLand/World, but the main plot is still amusing.
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 hey, thanks ! that helps a lot. 
since you said HUD is 
currently used by military pilots i looked it up (i didn't realize it was a real thing) ; that's crazy ! now i'm imagining having a transparent overlay of my vision during my daily life... i think i would feel like an android... 

HUD of an F/A-18C
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					Originally Posted by astra  I never new the proper meaning of the abbriviation, but it is used in FPSs  too   | 
	
 astra, you have clearly not understood the point of my questions. i was requesting explanations for words i did not know, not yet more obscure TLAs. 
