Introducing calculation errors
While evaluating calculations, you will most probably encounter some sort of calculation errors. The following paragraphs focus on introducing calculation errors, error alerts, and error categories used in Tedds for Word.
The following only applies to Tedds for Word.
Error alerts
The method in which Tedds for Word informs you about calculation errors depends on whether you have selected the Prompt on calculation error option in Tedds options.
Depending on whether the Prompt on calculation error option is selected, Tedds for Word either:

Places an error field in your document directly after the erroneous expression.
Tip: To make the error fields easy to locate, you can set a specific font and color for them. To modify the look of error messages, go to . 
Pauses calculations and alerts you with a dialog.

If you click Continue, Tedds for Word continues calculating until the calculation process has finished, or until it finds the next calculation error.

If you click Abort, the document will be returned to the state where it was before you started the calculation process.

Error categories
Tedds for Word contains four different error categories:
 Variable definition errors
 Dimensional errors
 Nonfatal errors
 Fatal errors
In the table below, see the meaning and typical examples of each error category.
Category  Description  Examples  Further information 

Variable definition errors  Errors related to missing or erroneous variables. 

You can select whether you want Tedds for Word to consider undefined variables as errors.

Dimensional errors  Errors which occur when dimensional analysis is switched on, and the units in the expression do not match. 

None 
Nonfatal errors  Syntax errors or other errors, which do not allow Tedds for Word to finish a calculation. 


Fatal errors  Major system errors, which automatically abort your calculations. 
