After doing a TimeProfileBrowser spyOn:, a Time Profile window opens to show 
the results but the reading is not easy : the tab characters are removed !
I spent a couple of hours to trace the problem but I didn't succeed (I had 
much fun playing with the squeak powerful tools).
Is this a known problem (if it is a problem) ?

To insert break points, is there a better way than to insert "self halt" and 
to revert to the previous version to remove it ?

Thanks

Joseph