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I am making a PDF template with text field forms.
I have changed the font settings in Adobe/Preferences to Arial size 8.

Yet when I make a text field, the settings are helvetica 12. Changing this to Arial 8 adds 500KB in weight per merge field (total fields 130!) so the developers are complaining that the size is too large.

How can I change the default font settings for forms so that when I create a new text field it will automatically be with the setting Arial size 8?

Thanks in advance for any help!