Correct errors detected by Smalltalk at run-time. Insert breakpoints in your code to trace it.
Trace changes in the values of objects.
For purposes of speed and safeguarding against server crashes, it is recommend to work from the temp directory of the local hard drive. You only need to modify your squeak image once, so if you did it for lab1 you are set for the rest of the quarter. Highlight the DebugLab.st file in your directory and right click on it. Select the fileIn option from the menu. At this point you should have successfully filed in a file into Squeak.