Some environments make it easier to browse the source than others. See for example the way you would figure out how to customize indentation in Emacs, by asking

Some environments make it easier to browse the source than others. See for example the way you would figure out how to customize indentation in Emacs, by asking Emacs for the source code to the command that is run when you press TAB: http://david.rothlis.net/emacs/customize_c.html#style http://david.rothlis.net/emacs/customize_c.html#style (Note that the above refers to browsing the source of Emacs itself, not using Emacs to browse any arbitrary source -- unfortunately the tools for that are still very primitive).