Note: If you are using qextserialport-XXX.tar.gz, the qesp.qch and html files have been provided. Open the file "html/index.html" using your web browser. Or integrated the "html/qesp.qch" into your QtCreator.== How to generate help files? ==Simply run following commands at toplevel directory. qmake make docsOr run the following command at this directory qdoc3 qextserialport.qdocconfThen a folder called "html" will be generated. Open the file "html/index.html" using your web browser.== How to integrated into Qt Creator or Qt Assistant? ==Once the html files are generated. run following commands cd doc/html qhelpgenerator qesp.qhpA file called "qesp.qch" will be generated.For Qt Assistant: Edit ==> Preferences ==> Documentations ==> Add...For Qt Creator Tools ==> Options ==> Help ==> Documentations ==> Add...