# Get familiar with Tekla Tedds

Tekla Tedds is software for performing structural engineering calculations. You can choose to run it as Tedds, or as the more sophisticated Tedds for Word.

Using Tedds you can:

- Access standard calculations by using the Library Access System.

Using Tedds for Word you can:

- Define and perform your own calculations in any Microsoft Word document quickly and simply.
- Access standard calculations by using the Library Access System.
- Access component calculations by using the Library Access System.
- Include engineering data in your calculations by using data lists, data tables, and data graphs.
- Calculate anything from a single calculation to an entire document.
- Automatically verify the dimensional accuracy of your calculations by specifying the appropriate units for your variables.
- Define multiple calc sections in your document, so that the same variables can have different values within your document.