ALiX's main window shows the content of a single data analysis page at any given time.
To navigate between different pages, the desired page can be selected from the Pages menu, or in the ALiX Pages list shown to the left of the main window (if the list is not visible, use the Table of Content item of the Pages menu or Ctrl+T).
Selecting a page via the Pages menu will highlight that page in the ALiX Pages list.
Note that depending on the type of file or software version, different lists of pages will be accessible.
For instance, for a smFRET - us ALEX data file type, the Pages menu will look like: