browse-url-new-window-flagbrowse-url-new-window-flag is a variable defined in `
browse-url.el'. Its value is
nilDocumentation: Non-nil means always open a new browser window with appropriate browsers. Passing an interactive argument to M-x browse-url, or specific browser commands reverses the effect of this variable. Requires Netscape version 1.1N or later or XMosaic version 2.5 or later if using those browsers. You can customize this variable.