The DES file is the mechanism that informs the FUI the who, what, where, and how to integrate and run a module.

The following outline is a description of the basic information provided in the DES. A link to an example DES file is included after the outline. Comparing the line-by-line description in the outline to the example should clarify and help locate data contained in the WFF file. Lines beginning with ';' are descriptive comments only and will not appear in the actual DES.

A line with: 
  Modeling Framework Check - [Const STRING] - "mf" 
  Modeling Framework Version - [Const STRING] "Version 2.1" 
End Line 
A line with: 
  Model Icon Type - [STRING] 
    ;[Model:|Database:|System:|Viewer:| ...] ... is assume to behave as a model 
  Model Icon Category - [STRING] 
    ;Any user supplied category label 
  Model Icon Category Prefix - [STRING] 
    ;unique three character string to identify the category 
  Module Name - [STRING] 
  Module UI executable or batch path - [STRING] 
    ;Extra command line parameters are also to be included space separated 
  Module Model executable or batch path - [STRING] 
    ;Extra command line parameters are also to be included space separated 
    ;Not used in the Viewer and optional for Database 
End Line 
Multi-Line text enclosed in double quotes with 
  ;Description of model - [STRING] 
  ;It is recommended that the Description editor be used to complete this section 
  ;The text should contain 
  ;  Description of the model 
  ;  Typical uses 
  ;  Limiting assumptions 
  ;  Typical time scale of runs 
  ;  Reference to formulation documents 
  ;  Reference to verification documents if they exist 
  ;  Reference to validation documents if they exist 
  ;  Hardware requirements 
  ;  Contact point for question regarding the model 
End Multi-Line 
A line with: 
  Number of Input Schemes - [INTEGER] 
  [Const STRING] - "Reads" 
End Line 
For each 'Input Scheme' 
  A line with: 
    Number of Input Boundary Conditions - [INTEGER] 
    For each Input Boundary Condition 
      Boundary Condition File Extension - [STRING] 
      Boundary Condition Qualifier - [STRING] 
      Minimum number of this file type required 
      Maximum number of this file type allowed 
    Next Input Boundary Condition 
  End Line 
Next 'Input Scheme' 
A line with: 
  Number of Outputs - [INTEGER] 
  [Const STRING] - "Writes" 
End Line 
For each 'Output' 
  A line with: 
    Boundary Condition File Extension - [STRING] 
    Boundary Condition Qualifier - [STRING] 
  End Line 
Next 'Output' 
A line with: 
  Number of Module Input Variables 
  [Const STRING] - "Variables" 
End Line 
For each 'Module Input Variable' 
  A line with: 
    Variable Name - [STRING] 
    Stochastic Flag - [STRING] 
      ;One of ["NOT STOCHASTIC"|"CONTINUOUS"] 
    Variable Units - [STRING] 
    If a minimum is defined then 
      [Const STRING] - "Min" 
      Minimum value - (float) 
    EndIf 
    If a maximum is defined then 
      [Const STRING] - "Max" 
      Maximum value - (float) 
    EndIf 
    Variable Description - [STRING] 
    Number of Label Ques 
    Datatype - [STRING] 
      ;One of ["String"|"Logical"|"Integer"|"Float"] 
  End Line 
  For each 'Label Que' 
    A line with: 
      If Label Que then 
        [Const STRING] - "Label" 
        Label - [STRING] 
        Index 1-6 - [STRING] 
          ;Indicate which variable indice is to be used for this label 
          ;"Site" is a reserved indice that represents site being assessed 
          ;"Index1" - "Index6" represent the different indices of the variable 
      Else 
        [Const STRING] - "Variable" 
        Variable Name - [STRING] 
          ;Name must be a variable from the FUI or Modules gid section 
        Index 1-6 - [STRING] 
          ;Indicate which variable indice is to be used for this label 
          ;"Site" is a reserved indice that represents site being assessed 
          ;"Index1" - "Index6" represent the different indices of the variable 
          ;An assumption is made that the order of the given indexing 
          ;variable arrays must match this variables order 
      EndIf 
    End Line 
  Next 'Label Que' 
Next 'Module Input Variable'

This DES example is a part of the case_01 test case.