Incubator properties gwt.home The location of the GWT jars you wish to compile and run against. gwt.tools The location of your GWT tools dir. gwt.hosts.dev.remote list of remote browsers to run while running junit dev tests. gwt.hosts.web.remote list of remote browsers to run while running junit web tests. project.jar Where should the gwt-incubator jar be created. project.external.bin If you a running in a very tight debug loop, you can set this property so ant won't recompile your source. Instead ant will use the classes provided by the project.external.bin directory. Note: No validation checking is done, so only use this flag if you are absolutely sure that your external.bin is up to date and valid. project.test.filter We will run only the tests which match the filter provided when the user invokes a testing task. project.build.properties Where you have defined the above propeties. Incubator tasks The incubator tasks are self-documenting. The list of public ones are build,help,dist,clean,all,test, test.hosted,test.web,test.remoteweb, test.selenium, build.demos. <script>writeDemoLink('${gwtc.module.file}');</script>