The Fields View displays the form fields, URL query parameters, multipart content, and file uploads (from form fields) found in the item selected in the Navigator or Testcase Editor. The Fields View can be opened from the menu Window->Show View->Fields.

Name of the field
Type - URL query parameter (query), form field (field), POST content (post), multipart (part), or form field file upload (file). On parent nodes with more than one type of child, mixed will be displayed
Number of usages - how many times is this field used
Modifier applied? - if a modifier is applied to dynamically change this value during a replay, an icon is shown here. On parent nodes with children that both have and have no modifier applied, a grey version of the icon is displayed. Double-clicking this column invokes the Field Editor Dialog - the value can be changed and/or a modifier configured for this field.
Values of the field - If a field has multiple values, they are displayed separated by commas (,) and the tooltip will show multiple lines with one value per line. Note that only unique values are displayed (i.e. multiples of the same value are only displayed once).
Title / URL - Displays the title of the transaction this field is used on, with the URL in a tooltip. This may be reversed (show URL with title in tooltip) via the view menu (see Show URL, below).
Go to transaction button - when a field is selected in the table, press this button to show the related transaction in the testcase editor.
Edit button - use this button when one or more fields are selected to invoke the Field Editor Dialog.
The fields displayed depends on the item selected:
All fields in the testcase are displayed if a Testcase is selected (in the Navigator or a Testcase Editor is selected but nothing is selected within the editor)
The fields for all transactions in the page are displayed when a Web Page is selected in a Testcase Editor
The fields for a single transaction are displayed when a single Transaction is selected in a Testcase Editor
To locate the Transaction containing a field, select the field in the Fields View and press the Display in Editor button. The corresponding Transaction is then selected in the Testcase Editor.
To change the constant value or configure modifiers on fields, the Field Edit Dialog can be opened by either:
single field: double clicking on the Modifier column in the Fields View
multiple fields: selecting the fields in the table and pressing the Edit button on the upper right portion of the Fields View

If multiple fields are selected, they will all be changed by this dialog. If they have different settings when the dialog is opened, the Constant/Dataset/User buttons will be initially de-selected - one must be chosen before editing can take place.
For more information on using modifiers to customize a testcase, see the Customizing a Testcase section.

Selecting the Show URL option from the Fields View menu will toggle the display of titles / URLs in the last column of the Fields View. When the URL is being displayed, the hover text for the entries in the URL column displays the transaction title. To revert to viewing the transaction titles in the table, select the Show Transaction Title option from the Fields View menu.