To open Add InOut Pad dialog:
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 1.  | 
 Open new or saved document..  | 
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 2.  | 
 Select Document tab in Properties Editor.  | 
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 3.  | 
 On Document tab find InOut Pads property category. If necessary, scroll down to the very last row in the InOut Pads property category till you see the cell saying "Add".  | 
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 4.  | 
 Click the cell with "Add" to open Add InOut Pad dialog.  | 
There are four fields:
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 1.  | 
 Name:  | 
 The name of the input pad.  | 
| 
 2.  | 
 Width:  | 
 Select a named constant that specifies the width in bits of a vector, or Unused if it is one bit.  | 
| 
 Out Link:  | 
 The expression that specifies the value of the output. The expression is specified with the Expression Editor which opens when you click the button in Out Link field.  | 
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| 
 OE Link:  | 
 The expression specifies the the value of the output enable. The expression is constructed with the Expression Editor which opens when you click the button in OutEn Link field.  | 

Fig.5 Opening Add InOut Pad dialog
