# IBM Visualization Data Explorer Programmer's Reference

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## 3.5 Module Builder: Overall Module Description

Use this section to specify the following information.

`Name` | The name of the module.
`Category` | The name of the tool category to which the module is to be assigned. This can be the name of an existing category or a name of your choosing. Click on `Existing` (at the right of the text field) for a list of existing categories. If you then click on one of the categories in the list, the category name is automatically inserted in the text field.
`Description` | A brief description of the module being defined. It appears in a `Description of...` box when the `Description...` button of the module's configuration dialog box is selected.
`Number of inputs` | The number of inputs to the module.
`Number of outputs` | The number of outputs from the module.
1. `Module Type` | The type of module: inboard, outboard, or runtime-loadable. Specify the type by activating the appropriate toggle button. The default is "inboard." Notes: Activating the `outboard` toggle button makes available two associated text fields (`Executable Name` and `Outboard Host`) and one toggle button (`Persistent`):
   `Executable Name` | Specifies the name of the module executable.
   `Outboard Host` | Specifies the name of the host machine on which the outboard module is to be run. This parameter defaults to "local host."
   `Persistent` | Specifies that the outboard module is not be terminated after it produces output.
For more information on outboard modules, see 11.5 , "Compiling, Linking, and Debugging an Outboard Module". Activating the `runtime-loadable` toggle button makes available the `Executable Name` text field. For more information, see 11.6 , "Compiling, Linking, and Debugging a Runtime-loadable Module".
`Executable name` | See `Module Type` above.
`Outboard Host` | See `Module Type` above.
`Persistent` | See `Module Type` above.
`Asynchronous` | The module may create data asynchronously, in response to events outside of Data Explorer. See 11.2 , "Asynchronous Modules".
`Include File Name` | The name of an include file to be inserted in the worker routine.

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