3.14.1. Data types and entering data for Test Cases
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### 3.14.1. Data types and entering data for Test Cases

Most actions in the library require one or more parameters (e.g. how often to click, what text to enter). Once you have added Test Cases or Test Steps to a Test Case, you will see which parameters are required by this action in the Properties View.

| You can also enter data sets in the Data Sets View (Section 3.14.11, “Using the Data Sets View to enter data loops”) and you can create central data sets to be reused throughout the Project (Section 3.14.9, “Using central data sets”).

You can be very flexible with data, so you have a choice about what to enter in the Properties View:

1. Concrete values (Section 3.14.2, “Entering concrete values as data in Test Cases”).

2. References (Section 3.14.3, “Using references for data in Test Cases”).

3. Variables (Section 3.14.5, “Using variables as data for Test Cases”).

4. Functions (Section 3.14.6, “Using functions as data for Test Cases”).

5. A mixture of the above (Section 3.14.7, “Concatenating (combining) parameters”).

6. An Excel file (Section 3.14.10, “Using an Excel file as an external data source”).

7. A reference to a central data set (Section 3.14.9, “Using central data sets”).