A Word

I'm trying to find a word that means printing only a part of the output in the middle of a program to check whether there are any bugs/errors in the algorithm. Can anybody kindly help me? Thanks a lot!
debug ?
I'm looking for a more specific word like dry run.
How about "half-assed"?
Or, somewhat more seriously, "spot check".
The closest phrase I can think of is "debug-printing" or "debug-logging".
dump?
I did a little search on the Internet and found the word to be "logging". Still, thanks for all the replies!
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