Template stores are kept in a file type called an item store. To make a copy of a template, use one of the below three approaches below.

• Use the EDIT statement to make an exact copy with a different name.
  proc template:
  

edit styles.default as styles.test;
   end;
quit;

• Use a LINK statement to link to the template. This method is more efficient because it does not create a new definition.

proc template;
   link styles.test to styles.default;
quit;

• Define the new template and use the PARENT= statement, which incorporates style-definition inheritance.

proc template;
   define style styles.test;
      parent=styles.default;
   end;
quit;

See also PROC TEMPLATE FAQ and Concepts.