Though you can probably figure it out by just clicking around, it is worth discussing the behavior of the GUI when moving your mouse around and clicking.
Clicking on any word or field value will give you the option to Add to search or Exclude from search (the existing search) or (create a) New search:
Clicking on a word or a field value that is already in the query will give you the option to remove it (from the existing query) or, as above, (create a) new (search):
In previous versions of Splunk, event segmentation was configurable through a setting in the Options dialog. In version 6.2, the options dialog is not present – although segmentation (discussed later in this chapter under field widgets section) is still an important concept, it is not accessible through the web interface/options dialog in this version.