Count the number of lines used in a longtext field

[Bill_Hyde]

Is there an expression to use for counting the number of lines used in a Longtext field ?

Option 1 (preferred)
Count the number of lines used in a Longtext field (and limit if needed).

Option 2
I can use field type = Text, but the view when typing in the field on the form is single line and the user can only see several words previously typed instead of the desired previous sentence(s) while typing.

I am trying to find a quick and easy way to identify how many pages the resulting PDF will be and this is the only field that can grow.
If there is a solution to one or both of the options then I should be able to ultimately have a Page x of x on the resulting PDF.

Thanks,
Bill