http://download.plt-scheme.org/doc/205/html/mzlib/index.htm libは > (current-library-collection-paths) ("C:\\Documents and Settings\\Imazu\\Application Data\\PLT Scheme\\205\\collects" "C:\\Program Files\\plt\\collects") > の中のmzlibから呼ばれる process.ssdate.sstrace.ss process.ss (require (lib "process.ss")) で使用可能となり C:\Documents and Settings\Imazu>mzscheme Welcome to MzScheme version 205, Copyright (c)
![MzScheme:MzLib](https://cdn-ak-scissors.b.st-hatena.com/image/square/53a987f8da95ff3323da15345495ff0ac5db3cf3/height=288;version=1;width=512/https%3A%2F%2Fpractical-scheme.net%2Fwiliki%2Fthumbnail-placeholder.png)