SAS language functions
and CALL routines that are created with PROC FCMP are stored in SAS
data sets that are contained in package declarations. Each package
declaration contains one or more functions or CALL routines. The FCmp
Function Editor displays all of the functions and CALL routines that
are included in a package.
With the FCmp Function
Editor, you can view functions in a package declaration as well as
create new functions. You can add these new functions to an existing
package, or create a new package declaration.