Hi,
Can you confirm the version of the software and operating system you are using?
Assuming you are in Form 'edit' mode, when placing a text field, you can change some of the properties.
For example, in the Options tab, you can select 'Multi-line' to allow for more than one line of text. You just need to draw a field that will contain all the text you will ever need.
Another option (that can go a bit out of control) is the Auto size for the font. The more text you type in the field, the small the font will get to shrink the text and make it all fit in the field. If the user types too much, the text will be so small, it cannot be read anymore.
Finally, I usually recommend my client to not print the pdf files. Paperless is so much easier and some platforms are very safe to save your files locked by a password.
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