This function will automatically launch the GEOsearch user interface in a web browser.
The user interface provides many powerful functions (e.g. second-round search) which is not available by command line programming.
It also provides a much easier and more convenient way to perform all functions available in command lines.
The user interface can also be accessed by http://zhiji.shinyapps.io/GEOsearch. Neither R nor any packages are required in this online version.
However, it is highly recommended that the user interface be launched locally for faster running speed.