To download and run the OT with Java Web Start please go to the ALMA Science Portal and follow the links to the Web Start version of the OT. Clicking on the link should start the download process or, if you already have an up-to-date installation, start the OT. Once the download is complete it is quite likely, but not certain, that a shortcut will be created. This will enable the OT to be started in the future without going back to the Science Portal. If prompted for a location, as usually happens on Macs, it is recommended that the Desktop be chosen. The actual OT software will be automatically placed into a specific subdirectory on your machine.
As part of the download process, a dialogue should appear that states that ``The application's digital signature has been verified.'' This confirms that the OT has been downloaded from a trusted source and should cause no security concerns. The screenshot should look very similar to that in Figure 2.2. ``Always trust content from this publisher'' should be ticked, if this has not been done so automatically, and the installation continued.