Hello, First of all, thank you for this project :) I've encountered a bug in the proparse, there seems to be an unknown keyword `SERIALIZE-HIDDEN` that triggers an exception. Here is a code sample to reproduce the bug : ``` DEFINE TEMP-TABLE table1 NO-UNDO FIELD field1 AS CHARACTER INDEX idx field1 . DEFINE DATASET dataset1 SERIALIZE-HIDDEN FOR table1. ``` Thank you for considering this issue