Syntax to add custom top entries in $CONTEXT_FILE to retain them in default.env during autonconfig

From the this note R12 Error 'Function not available to this responsibility' When Trying To Access Custom Form. (Doc ID 553014.1), it says to add custom top entries as below in context_file, but syntax is not given. Pleas share the syntax to add custom tops in context_file to keep them added in default.env when we run autoconfig in 12.1.3 instance.

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Note: Incase of multiple CUSTOM_TOP 's are in use, each must be stated in the default.env file. (Previously in R11i you could have one CUSTOM_TOP in the .env file pointing to other CUSTOM_TOP 's)