Hello,
I will answer each of your qeustion below:
Do I have to purchase a license to use the beta version beyond 30 days?
You can purchase 4.2 now with UpgradeInsurance which will bring 5.x to you as soon as the final is released. That way, you will receives the 4.2 pricing which may be less than 5.x pricing.
Is the beta version mentioned above the first release with the filter
options that uses the operators (i.e.. AND, OR, XOR, etc)?
Yes, the new version of WinSyslog has a very powerful filter engine and you can apply all the operators that you have mentioned in your question plus others as well.
Where can I find documentation with details on how to use the operators (i.e. AND, OR, XOR, etc)?
You can have an idea about how to apply complex filters on the following link:
http://www.mwagent.com/Common/en/FAQ/ComplexFilterConditions.ASP
Please let me know if it helps you or not. If you have any other question, please dont hesitate to ask us.
Best Regards
Wajih-ur-Rehman
Adiscon