Regarding use of *(asterisk) in a variable

While going through a peice of code, I noticed a structure defined as *NAST.
I am not sure what this means but it behaved the same way as a structure or work area would do in a program.
Can anyone please explain what does the *(asterisk) stands for here.
Thanks and Regards,
Debanjan Das

Hello Debanjan,
The ability to put an asterisk in front of the name is indeed a feature carried over from R/2. 
Adding a asterisk before table name will create one more work area for the variable with the same dictionary definition table.
Tables: nast,*nast.
You will two work areas for table NAST.
I hope you help.

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