Column masking

<table name="SYSCAT.TABDEP">
    <sql_name>SYSCAT.TABDEP</sql_name>
    <singular_name>Table dependencies</singular_name>
    <plural_name>Table dependencies</plural_name>
    <description/>
    <rows_per_page>50</rows_per_page>
    <order_by_index/>
    <display_columns>
        <col type="column" name="tabschema"/>
        <col type="column" name="tabname"/>
        <col type="column" name="dtype"/>
        <col type="column" name="owner"/>
        <col type="column" name="ownertype"/>
        <col type="column" name="tabauth"/>
        <col type="column" name="bschema"/>
        <col type="column" name="bname"/>
        <col type="column" name="btype"/>
    </display_columns>
    <column name="bname">
        <c_sql_name>BNAME</c_sql_name>
        <c_title>Depended Table</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
    </column>
    <column name="bschema">
        <c_sql_name>BSCHEMA</c_sql_name>
        <c_title>Depended Schema</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
    </column>
    <column name="btype">
        <c_sql_name>BTYPE</c_sql_name>
        <c_title>Depended Type</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
        <c_column_mask_file>masks/tableTypeMasks.xml</c_column_mask_file>
    </column>
    <column name="dtype">
        <c_sql_name>DTYPE</c_sql_name>
        <c_title>Type</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
        <c_column_mask_file>masks/tableTypeMasks.xml</c_column_mask_file>
    </column>
    <column name="owner">
        <c_sql_name>OWNER</c_sql_name>
        <c_title>Owner</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
    </column>
    <column name="ownertype">
        <c_sql_name>OWNERTYPE</c_sql_name>
        <c_title>Owner Type</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
        <c_column_mask>
            <value_mask value="U"><mask>User</mask></value_mask>
        </c_column_mask>
    </column>
    <column name="tabauth">
        <c_sql_name>TABAUTH</c_sql_name>
        <c_title>Privileges</c_title>
        <c_presentation>n</c_presentation>
        <c_drill>n</c_drill>
    </column>
    <column name="tabname">
        <c_sql_name>TABNAME</c_sql_name>
        <c_title>Name</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
    </column>
    <column name="tabschema">
        <c_sql_name>TABSCHEMA</c_sql_name>
        <c_title>Schema</c_title>
        <c_presentation>s</c_presentation>
        <c_drill>y</c_drill>
    </column>
</table>