Section 2.6.1 explicitly warns about the danger of creating infinite loops. If you have a rule that can "match nothing" and repeat indefinitely, the parser will get stuck trying to output infinite empty elements.

Always ensure that rules capable of matching an empty string are tightly bound and cannot be called recursively without consuming at least one literal character. 🌐 Option 3: I2P (The Invisible Internet Project) 2.6.1

In ixml, you can define a rule that generates an XML element in your output based on the absence of characters.

If you are referring to the popular privacy utility by SweetP Productions , version 2.6.1 was a highly focused maintenance release centered around security hygiene and system permissions. This app allows you to drop private files into a vault that makes them completely invisible to the finder and terminal.