In the Library window, you control whether PowerBuilder will display the comments associated with libraries and objects. 

To display the comments, click the Comments option on the View Menu.  A check mark displays next to the option to indicate it is the active option. 

To stop the display of comments, click the Comments option on the View Menu.  The check mark no longer displays next to the option; it is inactive. 

The default setting for this option is the setting the option had the last time you used the Library Painter.