// edit/undo menu item handler private void undoToolStripMenuItem_Click(object sender, EventArgs e) { working(true); saveText(); course = course.UnDo(); updateScreen(); working(false); }
// edit/undo menu item handler private void undoToolStripMenuItem_Click(object sender, EventArgs e) { working(true); saveText(); course = course.UnDo(); updateScreen(); working(false); }