void RoleControl()
{
if (GUILayout.Button("<", Styles.normal_button, GUILayout.Width(15)))
{
Role = TCAEngineInfo.PrevRole(Role); Changed = true;
}
GUILayout.Label(TCAEngineInfo.RoleNames[(int)Role], GUILayout.Width(120));
if (GUILayout.Button(">", Styles.normal_button, GUILayout.Width(15)))
{
Role = TCAEngineInfo.NextRole(Role); Changed = true;
}
}