The Convert on INPUT and Convert on OUTPUT sections of this dialog box let you configure how CRiSP maps spaces and tabs. Some people, when editing files, prefer hard tabs, whereas other people prefer soft tabs, i.e. replacing each tab character with the appropriate number of space characters. Having spaces instead of tabs can make editing more convenient depending on your personal habits.
CRiSP can convert files when loading them, and map spaces and/or tabs when the file is saved, so that you can edit files in the style to which you are accustomed whilst preserving the spaces and tabs layout of a file, e.g. because of project standards or because of compatibility with existing applications.