Change how text wraps in TextEdit on Mac
Control how text wraps in TextEdit windows and documents printed from TextEdit, and choose whether or not to hyphenate words at the ends of lines.
Change how text wraps in the window
You can wrap text to the window or to page margins based on paper size.
In the TextEdit app on your Mac, do either of the following:
Choose Format > Wrap to Window to wrap text in the TextEdit window.
Choose Format > Wrap to Page to wrap text within page margins.
To change the paper size, choose File > Page Setup.
Change how text wraps in a printed document
You can print a document with line breaks that match those in the TextEdit window.
In the TextEdit app on your Mac, choose File > Print, then deselect “Rewrap contents to fit page.”
If you don’t see the option, click the arrow 
next to TextEdit in the print menu.
Note: You can’t adjust the margins of a TextEdit document when you print it. Instead, you can print it from the Pages app. See Set document margins in the Pages User Guide for Mac.
Allow hyphenation
You can have TextEdit automatically hyphenate long words at the ends of lines.
In the TextEdit app on your Mac, choose Format > Allow Hyphenation.
To turn off hyphenation, choose Format > Do not Allow Hyphenation.