The properties of the MaterialList FixedLayout object define the original ISOGEN Material list options, where ISOGEN plots the column headings, i.e. they are not User definable.

The FixedLayout object does not create any Material list definition (MLD) data - everything is contained in the properties of this object.

The property ActiveList on the MaterialList object must be set to Fixed.

The right hand panel shows the data entries as a spreadsheet, and the properties of each data entry can be modified as required.

Some properties have a drop-down selection menu which pops-up when the property is double-clicked. Other properties are typed entries - simply click in the field to place the cursor, then type the required value.