.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: form_field_validation.3x,v 1.22 2018/07/14 22:39:06 tom Exp $
+.\" $Id: form_field_validation.3x,v 1.23 2018/07/28 21:18:11 tom Exp $
.TH form_field_validation 3X ""
.de bP
.ie n .IP \(bu 4
The predefined types are as follows:
.TP 5
TYPE_ALNUM
-Alphanumeric data. Requires a third \fBint\fR argument, a minimum field width.
+Alphanumeric data.
+Requires a third \fBint\fR argument, a minimum field width.
.TP 5
TYPE_ALPHA
-Character data. Requires a third \fBint\fR argument, a minimum field width.
+Character data.
+Requires a third \fBint\fR argument, a minimum field width.
.TP 5
TYPE_ENUM
-Accept one of a specified set of strings. Requires additional
-parameters:
+Accept one of a specified set of strings.
+Requires additional parameters:
.RS
.bP
a third \fB(char **)\fR argument pointing to a string list;
This is an ncurses extension;
this field type may not be available in other curses implementations.
.PP
-It is possible to set up new programmer-defined field types. See the
-\fBform_fieldtype\fR(3X) manual page.
+It is possible to set up new programmer-defined field types.
+See the \fBform_fieldtype\fR(3X) manual page.
.SH RETURN VALUE
-The functions \fBfield_type\fR and \fBfield_arg\fR return \fBNULL\fR on
-error. The function \fBset_field_type\fR returns one of the following:
+The functions \fBfield_type\fR and \fBfield_arg\fR return \fBNULL\fR on error.
+The function \fBset_field_type\fR returns one of the following:
.TP 5
.B E_OK
The routine succeeded.
The header file \fB<form.h>\fR automatically includes the header file
\fB<curses.h>\fR.
.SH PORTABILITY
-These routines emulate the System V forms library. They were not supported on
+These routines emulate the System V forms library.
+They were not supported on
Version 7 or BSD versions.
.SH AUTHORS
-Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
-S. Raymond.
+Juergen Pfeifer.
+Manual pages and adaptation for new curses by Eric S. Raymond.