private void MenuSyntaxClickCallback(object sender, EventArgs e)
{
/* Unselect previously selected menu items */
foreach (var item in _mnuSyntax.DropDownItems.Cast <ToolStripItem>().Where(item => item.GetType() == typeof(ToolStripMenuItem)))
{
((ToolStripMenuItem)item).Checked = false;
}
LanguageControl.Syntax(sender, _tsFiles);
}