With Opera, in the Tools menu click Preferences. Click the Advanced tab then, in the left panel, click Network. Click Proxy Servers and select use automatic proxy configuration. Enter the URL of the PAC file in the box then click OK to save the settings. With Safari for Windows, in the Edit menu click Preferences.
http://www.cisco.com/c/en/us/td/docs/security/web_security/connector/connector2972/PACAP.html
Multiple specifications provide a fall-back when a proxy fails to respond. The browser fetches this PAC file before requesting other URLs. The URL of the PAC file is either configured manually or determined automatically by the Web Proxy Autodiscovery Protocol.
https://en.wikipedia.org/wiki/Proxy_auto-config
Under Type of Committee, the PAC would check box 5(f). Additionally, the committee must submit a letter to identify itself as a Super PAC or Hybrid PAC. The Commission has approved a template for Super PACs to use, and has provided specific instructions for Hybrid PACs.
http://www.fec.gov/ans/answers_pac.shtml
Proxy Auto-Configuration (PAC) is a method used by Web browsers to select a proxy for a given URL. The method for choosing a proxy is written as a JavaScript function contained in a PAC file.
http://www.cisco.com/c/en/us/td/docs/security/web_security/connector/connector2972/PACAP.html
A PAC file contains a JavaScript function “ FindProxyForURL(url, host) ”. This function returns a string with one or more access method specifications. These specifications cause the user agent to use a particular proxy server or to connect directly.
https://en.wikipedia.org/wiki/Proxy_auto-config
After registering with the FEC, PACs must file regular reports disclosing their receipts and disbursements. PACs have the option to file these reports quarterly or monthly, and may change their filing frequency as often as once a year.
http://www.fec.gov/ans/answers_pac.shtml
Quick Answers to PAC Questions. This page provides answers to frequently asked questions. If you don't find an answer to your question here, please contact the FEC's Information Division, toll free at 800-424-9530 or by e-mail at info@fec.gov.
http://www.fec.gov/ans/answers_pac.shtml
By convention, the PAC file is normally named proxy.pac. The WPAD standard uses wpad.dat. To use it, a PAC file is published to a HTTP server, and client user agents are instructed to use it, either by entering the URL in the proxy connection settings of the browser or through the use of the WPAD protocol.
https://en.wikipedia.org/wiki/Proxy_auto-config
Nonconnected PACs must register by filing FEC Form 1 [PDF] (Instructions [PDF]), Statement of Organization within 10 days after raising or spending in excess of $1,000 in connection with federal elections.
http://www.fec.gov/ans/answers_pac.shtml
Windows Network Share Hosted PAC Files. It is possible to host a PAC file on a Windows network share by using a VBScript to copy it to the local machine. This can be integrated with Windows logon scripting. Step 1 Set a share directory on a file server that everyone has access to. Step 2 Create the proxy.pac file in the shared directory.
http://www.cisco.com/c/en/us/td/docs/security/web_security/connector/connector2972/PACAP.html
what language is a pac file
Java language is a pac file. PAC file is in JavaScript function language.