Web Proxy Auto-Discovery Protocol
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Web Proxy Autodiscovery Protocol makes it possible for browsers to locate proxies automatically by storing information on a host with standard name wpad.myhost.myisp.com/proxy.pac.
IEFT 1999: [Web Proxy Auto-Discovery Protocol http://www.ietf.org/proceedings/99nov/I-D/draft-ietf-wrec-wpad-01.txt] - Expired internet draft
Waikato Linux Users Group Wiki 2004: [WPAD http://www.wlug.org.nz/WPAD]