SAS/IML resolves functions and subroutines in the following order:

• Functions

  1. IML’s built-in functions

  2. User-defined IML modules existing in the current environment

  3. STORAGE library, if open

  4. SAS DATA step functions

  5. IMLMLIB library

• CALL statement

  1. IML’s built-in calls

  2. User-defined IML modules existing in the current environment

  3. STORAGE library, if open

  4. SAS DATA step call

  5. IMLMLIB library

• RUN statement

  1. User-defined IML modules existing in the current environment

  2. STORAGE library, if open

  3. IML’s built-in calls

  4. SAS DATA step call

  5. IMLMLIB library