New documents can be created from presets or customised to meet your specific needs. Presets are organised into categories which indicate the type of deliverable and the correct settings for that deliverable. For example, presets for desktop printing (in the Print category) use an RGB colour space, while presets for professional offset printing (Press-Ready category) use a CMYK colour space.
The New Document dialog also presents separate tabs which allow you to customise your current preset's settings and setup your document.
Any document preset can be customised. Typically, customising just the page size may be needed with the remaining preset settings kept unchanged.
The settings will be remembered for just the current document, although you can save the preset to a memorable name for future use.
The custom preset appears at the bottom of the category from which the originally selected preset was customised.
Any preset you save immediately after creating the category will be added to that category.