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| cls                          | attribute                | description                                     | rdl                                                   | is_proteus_generic_attribute |
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| "ColumnPackingsArrangement"  | "NumberOfPackings"       | "The number of packings in the <owner>."        | <http://sandbox.dexpi.org/rdl/NumberOfPackings>       | true                         |
| "ColumnTraysArrangement"     | "NumberOfTrays"          | "The number of trays in the <owner>."           | <http://sandbox.dexpi.org/rdl/NumberOfTrays>          | true                         |
| "FilterUnit"                 | "NumberOfFilterElements" |                                                 | <http://sandbox.dexpi.org/rdl/NumberOfFilterElements> | true                         |
| "MetaData"                   | "TotalNumberOfSheets"    | "The total number of sheets."                   | <http://sandbox.dexpi.org/rdl/TotalNumberOfSheets>    | true                         |
| "MixingElementAssembly"      | "NumberOfMixingElements" | "The number of mixing elements in the <owner>." | <http://sandbox.dexpi.org/rdl/NumberOfMixingElements> | true                         |
| "PlateAndShellHeatExchanger" | "NumberOfPlates"         | "The number of plates in the <owner>."          | <http://data.posccaesar.org/rdl/RDS364229>            | true                         |
| "TubeBundle"                 | "NumberOfTubes"          | "The number of tubes of the <owner>."           | <http://data.posccaesar.org/rdl/RDS363959>            | true                         |
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