You like adding logging messages manually in Linux/Unix. You do it from the command prompt with "# write a cool message here". You review the messages with a "history" command. You also append messages to log files in /var/log/foorbar.d with 'echo "note this" >>'. How do you introduce your own messages into Windows event log?
Run a command like this but change "Application" to "Security" or whichever log category you want:
Write-EventLog -LogName Application -EventId 3 -Message "Continual Integration helps!" -Source "Windows Error Reporting" # Note that "Windows Error Reporting" is just one of several valid sources. The EventID could be a different integer too.