New Command [ File menu (Startup) or File menu (Graphics)]
If there is a data set in memory which has been modified, you are asked if you want to save the changes - see the Close command.
When you use this command to start a new data set, ATOMS first steps through most of the dialogs in the Input1 menu, which involve parameters which are considered to be intrinsic to the structure in question. After you click OK in each dialog, a dialog appears (Entering New Data) giving you the choice of continuing or aborting the data entry. You can eliminate this dialog with the Confirmatory alerts checkbox in the Preferences dialog in the Settings Menu. At the end of the dialogs in the Input1 menu another dialog appears (End of Mandatory Input) giving you three choices: 1) you can continue with the non-mandatory part of the input, which consists of the dialogs in the Input2menu, involving mostly display aspects of the structure; 2) you can stop here and accept the display parameters currently in memory; or 3) you can read in the default display parameters from a disk file (the current display parameters can be saved as the defaults with the Save Defaults command in the Settings menu. If there is no data set in memory, option 2) will give the default values.
If there is a data set in memory which has been modified, you are asked if you want to save the changes - see the Close command.