+ "\t\tThe from: prefix is used to match the name or address of\n"
+ "\t\tthe sender of an email message.\n\n"
+ "\t\tThe to: prefix is used to match the names or addresses of\n"
+ "\t\tany recipient of an email message, (whether To, Cc, or Bcc).\n\n"
+ "\t\tAny term prefixed with subject: will match only text from\n"
+ "\t\tthe subject of an email. Quoted phrases are supported when\n"
+ "\t\tsearching with: subject:\"this is a phrase\".\n\n"