+ O_VISIBLE
+ The field is displayed. If this option is off, dis-
+ play of the field is suppressed.
+
+ O_WRAP
+ Words that do not fit on a line are wrapped to the
+ next line. Words are blank-separated.
+
+ These extension options are defined (extensions are off by
+ default):
+
+ O_DYNAMIC_JUSTIFY
+ Permit dynamic fields to be justified, like static
+ fields.
+
+ O_NO_LEFT_STRIP
+ Preserve leading whitespace in the field buffer,
+ which is normally discarded.