Where can I find doc about XTK expressions and xPath expressions?

Hi @campaignerforlife ,

Please refer the below documentation

1)xpath is for Schema level Compute String and the link is as shown below:

https://experienceleague.adobe.com/docs/campaign-classic/using/configuring-campaign-classic/schema-reference/schema-structure.html?lang=en#referencing-with-xpath

2) for xtk expressions, please refer to below documentation

https://opensource.adobe.com/acc-js-sdk/xtkSession.html

https://experienceleague.adobe.com/developer/campaign-api/api/p-1.html

Regards,

Pravallika.