You can specify a minimum size for annotation labels (for example, callouts, notes, and reference labels) using the Minimum label size (characters) option in the Creo Illustrate Options dialog box.

This option sets all annotation labels to a width or diameter of either 1, 2, or 3 characters. Labels that contain fewer than the selected number of characters are enlarged to match the Minimum label size (characters).

If the number of characters in a label is equal to, or greater than, the number selected for Minimum label size (characters), the label is sized to fit the number of characters it contains. This is also the case if theMinimum label size (characters) is set to Automatic (default).