Debugging refers to a process in software development 
whereby program analysts combines through computer code 
looking for bugs.

In .NET we have objects called Trace Listeners. A listener 
is an object that receives the trace output and outputs it 
somewhere that somewhere could be a window in your 
development environment

Two important programming operations/processes that help us 
create and maintain applications are called "Debugging" 
and "Tracing". 

Debugging allows us to observe and correct programming 
errors. Tracing is a form of Debugging that allows us to 
keep track of the health and sanitary conditions of our 
applications.