dialog4ports can be configure using environment variables:

Dialog height. (Default value: 0)

Minimal dialog height, for example:
if D4PMINHEIGHT = 5 and count of option elements(1-4) less than D4PMINHEIGHT, then height will extended to 5. (Default value: 0)

Dialog width. (Default value: 80)

Dialog full screen mode. (Default: N)

Text in dialog becomes to center. (Default: N)

Use ASCII character for line drawing. (Default: N)

AUTHORS:
The dialog4ports utility was written by: Ilya A. Arkhipov
with help from:

• Eitan Adler
• Baptiste Daroussin
• Alexey Dokuchaev