How to allow only single line into text field (instead of mutliple line)

[MITTAL Pradeep Kumar]

Hello,
 
When I create a text field in the rev, then one can enter the mutliple
lines in the text field by using enter key.
 
Can anyone tell me what to configure so that text filed allow only one
line of text ?
 
Thanks for your help
 
Best Regards
Pradeep