You haven't specified the type of the widget, there are some widget specific options, look at Tk::Text this widget has options (tags) like:

• "-justify=>*justify*" with options (left, right, center).
• "-lmargine1=>*pixels*".
• "-lmargine2=>*pixels*".
• "-rmargine=>*pixels*"

This might only address your inquiry, in part, with regard to a limited array of Widgets in Tk, because, many Tk widgets have their specific options in addition to the shared options....

Update:since the OP later explained that the widget is a frame these options and tags are specific to text widgets and not frames.