Once you have successfully started the OT the main GUI will be displayed in your screen. The appearance of the main OT GUI is similar to that shown in Figure 1 . Some of what is displayed may not yet functional or may be subject to changes in future OT version. The use of OT GUIs heavily relies on selecting items by means of standard GUI conventions such as mouse-driven positioning of the cursor or mouse button clicking to select elements.
The OT main GUI contains the following important areas:
As described above in the Project pane the user choose between two views to creating an Observing Project: the Science View and the System View .
In the Science View , both for the Phase I Observing Proposal and the Phase II Observing Program the information is provided in terms of science goals only. Technical information such as receiver and correlator settings as well as calibrating aspects are not displayed in the Science View.
The System View that enables the user to have more control over the telescope configuration. In this view you can specify in some detail what the setup of the instrument will be. Using the System View, the actual Scheduling Blocks are defined, including both the observations of the scientific targets as well as those of the calibrators. This approach requires a strong knowledge of ``How ALMA Works''.
Using the mapper, Phase II project information generated with the Science View can be converted (mapped) to Scheduling Blocks in the System View.
This current release of OT (Version 3.1) is concentrated very much on the System View. What is provided to support the Science View is currently primitive. Phase I proposal creation is not supported while Phase II program generation from science goals is limited.
Further details about the GUI and user configuration options are described in the OT User Manual.