[Tutor] Tkinter: 'explanation text' when the mouse is over an image button ?

[learner404]

Hello,

With a Tkinter app I have buttons with an image filling each button like
this,

bu10=Button(frame2, image=picPlay, bg="white", command=play)

I want to give a small explanation of each button when the user puts the
mouse over the picture (something like the title tag in a hyperlink).
I thougth I saw this in Tkinter but can't find it here:
http://effbot.org/tkinterbook/button.htm

Thanks for any suggestions to achieve this.

learner404
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