This dialog is available from the program's File menu.
Show probability bars on graphs
This setting controls whether to display magenta vertical lines indicating ±1.0, 2.0 and 3.0 standard deviation price limits from the current stock price.
Proxy server IP address
Some network setups, especially corporate Local Area Networks, are protected from intrusion by a "proxy server" interposed between internal systems and the Internet outside the firm. In such cases, each application must ask the proxy server for permission to access the Internet.
This setting tells Options Laboratory where to find the proxy server to make such requests. Ask your systems administrator what IP address to enter in this box.
Proxy server port
Normally should be 80. Ask your systems administrator before changing this port number.