FOCUS

  Displays an overview of the buffer.  The current line remains
  visible, and the rest of the buffer is compressed.

  Displays the current line and its surrounding text.  The rest of
  the lines in the buffer are collapsed as much as possible and
  represented by overview lines.

  The editor determines the relative level of detail of a line by
  comparing the indentation of the line with the indentation of other
  lines.  The editor's treatment of the indentation of a line is
  influenced by indentation adjustment definitions.

  Command Equivalent:

          FOCUS

  Related Topics:

          COLLAPSE
          DEFINE ADJUSTMENT
          DEFINE LANGUAGE/OVERVIEW_OPTIONS
          EXPAND
          MODIFY LANGUAGE
          SET NOOVERVIEW
          SET OVERVIEW
          VIEW SOURCE