function init(basePath) {
    var action = new RGuiAction(qsTranslate("Circle3T", "3 T&angents"),
        RMainWindowQt.getMainWindow());
    action.setRequiresDocument(true);
    action.setScriptFile(basePath + "/Circle3T.js");
    action.setIcon(basePath + "/Circle3T.svg");
    action.setStatusTip(qsTranslate("Circle3T", "Draw circle tangential to three entities"));
    action.setDefaultShortcut(new QKeySequence("c,t,3"));
    action.setDefaultCommands(["circletangent3", "ct3"]);
    action.setGroupSortOrder(8500);
    action.setSortOrder(400);
    action.setWidgetNames(["DrawCircleMenu", "CircleToolBar", "CircleToolsPanel", "CircleMatrixPanel"]);
}