... way is to use the Online Package Manager: 2_101438_360000000.png If you can see the above menu item, jump to step 6. If that isn't showing already installed, you will need to install it: 1. click the Package> Install/Uninstall Packages... menu item: 2_101438_050000000.png 2. this dialog will appear. Scroll down the right-hand list and select onlinepackagemanager. Then click the Install selection button: 2_101438_050000001.png 3. then click the Save and rebuild IDE button: 2_101438_050000002.png 4. click Continue to confirm: 2_101438_050000003.png 5. the process will take a while, after which Lazarus will restart from scratch. 6. but now there is a new item on the Package menu. Click the Online Package Manager menu item: 2_101438_360000000.png (An internet connection is needed to search for online packages.) 7. after a while this dialog will appear. Scroll down the list and tick the box next to HtmlViewer, then click the Install button. If there is a choice click install from repository. 2_101438_360000001.png Note in passing some of the other ...