class Version_2_2 "Version 2.2 (April 6, 2005)"
    extends Modelica.Icons.ReleaseNotes;

    annotation (Documentation(info = "<html>\n\n<p>\nVersion 2.2 is backward compatible to version 2.1.\n</p>\n\n<p>\nThe following <strong>new libraries</strong> have been added:\n</p>\n\n<table border=\"1\" cellspacing=0 cellpadding=2>\n<tr><td><a href=\"modelica://Modelica.Media\">Modelica.Media</a></td>\n          <td> Property models of liquids and gases, especially\n                   <ul>\n                   <li>1241 detailed gas models,</li>\n                   <li> moist air,</li>\n                   <li> high precision water model (according to IAPWS/IF97 standard),</li>\n                   <li> incompressible media defined by tables (cp(T), rho(t), eta(T), etc. are defined by tables).</li>\n                   </ul>\n                   The user can conveniently define mixtures of gases between the\n                   1241 gas models. The models are\n                   designed to work well in dynamic simulations. They\n                   are based on a new standard interface for media with\n                   single and multiple substances and one or multiple phases\n                   with the following features:\n                   <ul>\n                   <li> The independent variables of a medium model do not influence the\n                                definition of a fluid connector port or how the\n                                balance equations have to be implemented.<br>\n                                Used independent variables: \"p,T\", \"p,T,X\", \"p,h\", \"d,T\".</li>\n                   <li> Optional variables, e.g., dynamic viscosity, are only computed\n                                if needed.</li>\n                   <li> The medium models are implemented with regards to efficient\n                                dynamic simulation.</li>\n                   </ul>\n          </td></tr>\n<tr><td><a href=\"modelica://Modelica.Thermal.FluidHeatFlow\">Modelica.Thermal.FluidHeatFlow</a></td>\n          <td> Simple components for 1-dim., incompressible thermo-fluid flow\n                   to model coolant flows, e.g., of electrical machines.\n                   Components can be connected arbitrarily together (= ideal mixing\n                   at connection points) and fluid may reverse direction of flow.\n</td></tr>\n</table>\n<p>\nThe following <strong>changes</strong> have been performed in the\n<strong>Modelica.Mechanics.MultiBody</strong> library:\n</p>\n<ul>\n<li> Component MultiBody.World has a new parameter\n         <strong>driveTrainMechanics3D</strong>. If set to <strong>true</strong>, 3D mechanical effects\n         of MultiBody.Parts.Mounting1D/Rotor1D/BevelGear1D are taken into account. If set to\n         <strong>false</strong> (= default), 3D mechanical effects in these elements\n         are not taken into account and the\n         frame connectors to connect to 3D parts are disabled (all\n         connections to such a disabled connector are also disabled, due to the\n         new feature of conditional declarations in Modelica language 2.2)</li>\n<li> All references to \"\" have\n         been changed to \"\" in order that after\n         copying of a component outside of the Modelica library, the references\n         still remain valid.</li>\n</ul>\n</html>"));
end Version_2_2;