Specify Label Contents (New Layout/Report assistant)
In this panel, you place the fields and text you want to print on each label.
 
In Available fields, double-click each field you want, in the order you want them to appear. (Or, select one or more fields, then click Add Field.)
To choose a field in another table, first choose the table from the list, and then place the field. You can also create a new field or table by choosing Manage Database from the list of tables.
In Label Contents, click to place the insertion point before the field you want to move (before the angle bracket delimiters <<). Then press Enter (Windows) or Return (Mac OS).
Place text or punctuation between fields
In Label Contents, click where you want the text or punctuation, then type what you want.
Remove a field from the label
In Label Contents, select the field name and the delimiters (<< and >>), then press Backspace (Windows) or Delete (Mac OS).
Remove all fields and text from the label
Click Clear All.
Important  FileMaker Pro formats fields on a Labels layout as merge fields. Merge fields are enclosed by double angle brackets (<< and >>). Make sure to select these brackets along with the field name if you move or delete a field name. Don't insert punctuation or other text inside the brackets unless it's part of the field name.
Notes and tips
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To select more than one field name in the field lists, Shift-click to select contiguous fields. Ctrl-click (Windows) or Command-click (Mac OS) to select non-contiguous fields.
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FileMaker Pro formats fields on a Labels layout as merge fields. You can’t enter or edit data using merge fields; use another layout for that purpose.
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Related topics 
Creating a layout