private void txtValue4_TextChanged(object sender, EventArgs e)
{
if (Working)
{
return;
}
FileChanged = true;
Working = true;
CurrentReq.UI_TextValue4_Set(txtValue4.Text);
lstRequirements.Items[CurrentReqNum] = CurrentReq.DisplayString();
lstRules.Invalidate();
lstRequirements.Invalidate();
RefreshColorSample();
Working = false;
}