[Home](./index.md) > [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) > [ExpressionFunctionDefinition](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.md) > [help](./kibana-plugin-plugins-expressions-public.expressionfunctiondefinition.help.md) ## ExpressionFunctionDefinition.help property Help text displayed in the Expression editor. This text should be internationalized. Signature: ```typescript help: string; ```