# Usage

**3D SymbolDesigner** is a high-level symbol definition modeller. Graphical primitives can be parameterised, and dimensions, position, and rotation in space can be defined by formulas. **3D SymbolDesigner** is case-sensitive, so care is required when entering names and formulas. All symbol data are stored in XML structures, which can also be exported.

Users can also define several variants of a symbol, which can be stored in an Excel file together with the symbol geometry.

It is recommended to read the tank-with-nozzles tutorial first, even if symbols are to be built for other disciplines.

> Attributes and their interfaces are stored in `Config.xls` in the `data` subdirectory of your **3D SymbolDesigner** installation. Add parameters that are not already included at the end of the **Attributes** tab in `Config.xls`. **3D SymbolDesigner** checks the parameter mapping, that is, the last line in the table of variants, against these attributes and marks all spelling errors and missing attributes with a red background.

Sample **3D SymbolDesigner** projects can be found in the `Samples` subfolder of your **3D SymbolDesigner** program folder. The following projects are included:

<table>
  <thead>
    <tr>
      <th><strong>Project</strong></th>
      <th><strong>Discipline</strong></th>
      <th><strong>Level</strong></th>
      <th><strong>Remarks</strong></th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Angle</td>
      <td>Piping (spec)</td>
      <td>***</td>
      <td>Includes manually created bulkload sheet examples.</td>
    </tr>
    <tr>
      <td>Compensator</td>
      <td>Piping (spec)</td>
      <td>****</td>
      <td>No bulkload sheets available.</td>
    </tr>
    <tr>
      <td>CustomInstrument</td>
      <td>Piping (custom instruments)</td>
      <td>**</td>
      <td>Sample bulkload sheets will be created by 3D SymbolDesigner (custom instrument tutorial).</td>
    </tr>
    <tr>
      <td>GateValveHandWheel</td>
      <td>Piping (spec)</td>
      <td>***</td>
      <td>Contains two projects, sample bulkload sheets included.</td>
    </tr>
    <tr>
      <td>Tank</td>
      <td>Equipment</td>
      <td>*</td>
      <td>Sample bulkload sheets will be created by 3D SymbolDesigner (basic tutorial).</td>
    </tr>
    <tr>
      <td>Tee</td>
      <td>Piping (spec)</td>
      <td>***</td>
      <td>Includes manually created bulkload sheet examples and a SymbolIcon.</td>
    </tr>
  </tbody>
</table>