In the following table the environment variables that are specific for the ADF-GUI are listed:
| Name | Meaning | Default Value |
| SCM_ERROR_MAIL | e-mail address for error reports | no error e-mail sent |
| SCM_GUIRC | location of the preferences file | $HOME/.scm_guirc |
| SCM_TPLDIR | location of the templates directory | none (no extra templates loaded) |
| SCM_STRUCTURES | location of the structures directory | none (no extra structures loaded) |
| SCM_RESULTDIR | location of the results directory | none (current directory used) |
| DISPLAY | X-window display to use | required (for all X11 programs) except on Windows |
| SCM_MOPAC | command to start MOPAC | none (default script $ADFBIN/mopac.scm will be used) |
| SCM_QUEUES | path to the dynamic queues directory | none (ADFjobs will search the remote $HOME/.scmgui) |
