[plt-scheme] teachpacks vs. require

On Jan 11, 2010, at 7:52 PM, Matthias Felleisen wrote:

> 
> Teachpacks were invented for a particular setting with a particular purpose, but yes, real programs should linguistically document where things come from. 
> 

Simply as a historical note, it may be helpful to point out that teachpacks predate modules by quite a bit.

John 

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