Where can I find a list of logical operators for BaseX?

[cocomei]

I'm using the official documentation: http://docs.basex.org/wiki/Commands#String_Syntax, and I haven't been able to locate a list of logical operators. I want to be able to query \[code\]text contains 'A' or 'B'\[/code\].Along these same lines, I'm also trying to figure out how to limit the number of results returned, and I'm trying to find a good guide to creating relations tables in BaseX.Thank you for your responses.