I am working on a Pega Knowledge Buddy and Pega Knowledge version 24.2 implementation. We have recently held a focus group with users and the two questions below were raised and I'm looking for support to answer them. These are:

Question 1: Special Characters in Article Titles and Queries

Historically, Pega advised against using special characters (e.g., ?, (), -) in knowledge article titles or in queries made to Search and Knowledge Buddy, due to potential impacts on search accuracy and relevance.

• Is that still the official recommendation as of the current platform capabilities (e.g., Pega 8.8+ with Buddy enabled)?
• Has anything changed in how Search and Buddy interpret and process queries with special characters?
• Can anyone explain how common characters like question marks, brackets, dashes, etc., are treated by the search engine and/or LLM-powered interactions.

Question 2: Advanced Search Syntax and Capabilities

I would also like to get access to a summary of supported advanced search syntax or features in Pega Knowledge Management and Knowledge Buddy.

• For example, is prefixing a term with a minus sign (e.g., -partner) still a valid way to exclude it from results?
• What other Boolean operators, wildcards, or field-specific search syntax are officially supported?
• Can anyone provide a link to any documentation or reference guide suitable for sharing with agents and knowledge authors.

Can anyone provide some advice and guidance to answer these questions.