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ctfmon.exe is a part of the Microsoft Office suite. It activates the Alternative User Input Text Input Processor (TIP) and the
Microsoft Office XP Language Bar. This program is a non-essential system process, but should not be terminated unless suspected to be causing problems.

svchost.exe is a generic host process name for services that are run from dynamic-link libraries (DLLs). There can be multiple instances of Svchost.exe running at the same time. Each Svchost.exe session can contain a grouping of services, so that separate services can be run depending on how and where Svchost.exe is started.

spoolsv.exe is the spooler service. It's responsible for managing spooled print/fax jobs.

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