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ORAC-DR allows you to create your own recipes and primitives, or modify those provided as part of the package. In either case you must tell ORAC-DR where your recipes and/or primitives are stored. This is achieved through two environment variables. $ORAC_RECIPE_DIR should equate to the directory containing your recipes. $ORAC_PRIMITIVE_DIR specifies the directory containing your primitives. Here's an example.

 % setenv ORAC_RECIPE_DIR /home/user/drmoan/recipes
 % setenv ORAC_PRIMITIVE_DIR /home/user/drmoan/primitives

Once these environment variables are defined, ORAC-DR first looks in $ORAC_RECIPE_DIR or $ORAC_PRIMITIVE_DIR to find a recipe or primitive respectively. If the script is absent, ORAC-DR looks in the standard $ORAC_DIR directories.