lib/phantom/modules/selectorDetect.js
function (time) {
          fs.write(options.outputFile, filter(page.content), "w");
          globals.exit(0, "snapshot for "+options.url+" finished in "+time+" ms\n  written to "+options.outputFile);
        }
function (time) {
          fs.write(options.outputFile, filter(page.content), "w");
          globals.exit(0, "snapshot for "+options.url+" finished in "+time+" ms\n  written to "+options.outputFile);
        }
The onReady callback