Two buffers are quite special, they do not take part in the building process. They are called Buffer 1 and 2 and are at the bottom of the tab. Buffer 1 is also used by the action script (it is called there the Res buffer). They can be used to store objects, for instance, the objects in the project. Objects can also be loaded from file into those buffers. Right-click on the buffer title to bring up the options.
The two next rows upwards on the tab contain data about the state of the survey. They won't normally be consulted by a user:
When building or destroying, objects are removed from Project in memory list and transfered to the list
Three things might happen when an object is sent to the server to be build or destroyed:
In case 2, a 'build' object gets transfered to the AddFailed list, a 'delete' object gets moved to the DeleteFailed list. They receive an error code, which will be saved to file if you save these lists. You can find out what the error code means by asking the bot:
error error number
or by consulting the SDK error list.
In case 3, the object remains on its Unconfirmed list.
These lists only get emptied when the program closes, or when the user decides to empty them. You can save their contents to file and use those files like you would use a normal project, and you can empty these lists. You can also copy or move their contents to Buffer 1, Buffer 2 or to the Project. Right-click on the list title to bring up the options.