You can define and control values for parameters and properties within a block definition using a Block Properties table.
Block Properties Table dialog box consists of a grid with parameters defining column headings and rows defining the different property set values. When selecting a block reference, it can be set to the values defined by one of the rows in the block properties table.
TheA table can include any of the following parameters and properties:
You can restrict the property set for block references to only values defined by one of the rows of the table. You can also change individual properties of the reference so that the property set no longer matches one of the defined rows.