Document.HyphenationZone Property (Word)
Returns or sets the width of the hyphenation zone, in points. Read/write Long.
Unless Word 2013 is in compatibility mode, HyphenationZone always returns 99999999.
This example enables automatic hyphenation for MyReport.doc. The hyphenation zone is set to 36 points (0.5 inch).
This example sets the hyphenation zone to 0.25 inch (18 points) and then starts manual hyphenation of the active document.