SAVE OUTFILE='SAVEfile name'.

This creates a permanent file containing the System version of your data (called an SPSS Save File), which can be used to re- create the Active File in later SPSS sessions by clicking File>Open, or by using the following command:

GET FILE='SAVEfile name'.

When an SPSS Save file exists on disk and is called into an SPSS session with File>Open or the GET command, there is no need to run a DATA LIST command or to read raw data, unless your original data have changed in some way and need to be updated.