I have found this code quite helpful in debugging - especially trying to look through a large xml schema file for a SharePoint list.
$fileName = "myFile.txt"
# Write some variable property to a file
$web = Get-SPWeb "http://blah.com"
$list = $web.Lists["My List"]
$list.SchemaXml > $fileName
# Open the file in notepad
Start-Process notepad -ArgumentList $fileName