+ O_PUBLIC
+ The field contents are displayed as data is entered.
+
+ O_STATIC
+ Field buffers are fixed to field's original size. Turn this
+ option off to create a dynamic field.
+
+ O_VISIBLE
+ The field is displayed. If this option is off, display 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.