Add the following using statements to the top of the file.

using Ant.ContentEntry;    //needed for core content entry services
using Ant.ContentEntry.Converters; // needed for standard converters
using Ant.ContentEntry.FieldDisplayers; // needed for standard displayers
using Ant.ContentEntry.ClassInformation; // needed for the attributes

Now at the top of the class add a ClassOverview attribute. It looks like this:

    /// <summary>class representing a television programme</summary>
    [ClassOverview]
    public class TelevisionProgramme
    {

For the ProgrammeName property, add the following attributes.

    /// <summary>Gets and sets the name of the television programme</summary>
    [PropertyInformation(typeof(StringConverter), typeof(InputEntry), true, 0)]
    [PropertyLanguage(PropertyLanguage.English, "Programme name", 
        "This is the name of the television programme", "You must specify a programme name")]
    public string ProgrammeName 

The attributes specify that this property is:

		A string, as signified by the StringConverter in property information.
		It uses default entry as specified by InputEntry.
		It is required, as specified by the true.
		It is the first field, as specified by the 0.

They also specify the English language version used in the form.

Mark up the other properties as follows:

using System;
using Ant.ContentEntry;    //needed for core content entry services
using Ant.ContentEntry.Converters; // needed for standard converters
using Ant.ContentEntry.FieldDisplayers; // needed for standard displayers
using Ant.ContentEntry.ClassInformation; // needed for the attributes
namespace HowTos
{
    /// <summary>class representing a television programme</summary>
    [ClassOverview]
    public class TelevisionProgramme
    {
        string programmeName;
        int channel;
        DateTime start=DateTime.Now;
        int duration=30;
        /// <summary>Default constructor required by content entry</summary>
        public TelevisionProgramme()
        {
        }
        /// <summary>Gets and sets the name of the television programme</summary>
        [PropertyInformation(typeof(StringConverter), typeof(InputEntry), true, 0)]
        [PropertyLanguage(PropertyLanguage.English, "Programme name", "This is the name of the television programme", "You must specify a programme name")]
        public string ProgrammeName 
        {
            get 
            {
                return programmeName;
            } 
            set 
            {
                programmeName = value;
            }
        }
        /// <summary>Gets and sets the channel that the programme is on</summary>
        [PropertyInformation(typeof(Int32Converter), typeof(InputEntry), true, 1)]
        [PropertyLanguage(PropertyLanguage.English, "Channel number", "Number of the channel that this program is on", "You must specify a channel number")]
        public int Channel 
        {
            get 
            {
                return channel;
            } 
            set 
            {
                channel = value;
            }
        }
        /// <summary>Start time of the programme</summary>
        [PropertyInformation(typeof(DateTimeConverter), typeof(InputEntry), true, 2)]
        [PropertyLanguage(PropertyLanguage.English, "Date of programme", "Date the program is on", "You must specify a date ")]
        public DateTime Start 
        {
            get 
            {
                return start;
            } 
            set 
            {
                start = value;
            }
        }
        /// <summary>Duration of the programme</summary>
        [PropertyInformation(typeof(Int32Converter), typeof(InputEntry), true, 3)]
        [PropertyLanguage(PropertyLanguage.English, "Duration", "Duration of the programme", "You must specify the duration of the programme")]
        public int Duration 
        {
            get 
            {
                return duration;
            } 
            set 
            {
                duration = value;
            }
        }
    }
}

Note the addition of default values for the private variables.