/// <summary>
/// Sets Yata's <c>Font</c> to <c><see cref="FontDefault"/></c>.
/// </summary>
/// <param name="sender"><c><see cref="it_FontDefault"/></c></param>
/// <param name="e"></param>
/// <remarks>Invoked by
/// <list type="bullet">
/// <item>Font|Load default font</item>
/// </list>
///
///
/// The item will be disabled if <c><see cref="FontDialog"/></c> is open
/// or if Yata's current <c>Font</c> is
/// <c><see cref="FontDefault"/></c>.</remarks>
void fontclick_Default(object sender, EventArgs e)
{
doFont(FontDefault.Clone() as Font);
}
