This parameter specifies one or more Session initialisation directories that contain APL code to be installed in ⎕SE. If this parameter is not specified, the default is a directory named StartupSession located in three standard locations.

Under Windows these might be:

  1. C:\Program Files\Dyalog\Dyalog APL-64 18.0 Unicode
  2. C:\Users\Pete\Documents\Dyalog APL Files
  3. C:\Users\Pete\Documents\Dyalog APL-64 18.0 Unicode Files

The version-specific name is :

     Dyalog APL{bit} {version} {edition}


See also Implementation.