Question from a DBA--

I have to ask this question because I have no experience doing user interface programming-- I use T-SQL and SSMS, and Excel to deliver reports, for everything I do. In the article, the T-SQL is presented in a window with horizontal scroll bars. What is the name by which to refer to such a window? It does not allow copy. Is this a problem of the particular browser I'm using or is it by design? With less elaborate user interface, I was able to copy the code from the article and paste it into the SSMS query window. Why is this scroll bar window supposed to be better than what worked just fine?

Thank you.