When set to unchanged, this variable causes the runtime system to leave the case and hyphen usage of the field names found in XFDs unchanged. XFDs are used with the Acu4GL interface, AcuXDBC, or AcuXML. By default, the run-time system converts all field names to lower case and all hyphens to underscores.
For AcuXML, the case and hyphen usage of the XFD must match the XML file exactly, and 4GL_COLUMN_CASE should be set to unchanged. For Acu4GL, however, you should be aware that most databases do not accept hyphens in column names. If you set this variable to unchanged to protect case, you may need to modify the XFD by hand to replace hyphens with underscores.