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#************* Title of helpfile !! and start of real helpfile ********
TITLE		ARB environment variables

OCCURRENCE	Anywhere

DESCRIPTION     Arb is aware of several environment variables:

                    ARBHOME

                        Should be set to the arb install directory
                        (usually /usr/arb)

                    LD_LIBRARY_PATH

                        path to system libraries (should contain $ARBHOME/lib (i.e. /usr/arb/lib if $ARBHOME is /usr/arb)).
                        Set by the 'arb' script.


                    ARB_TEXTEDIT

                        The name of the editor you like to use when editing textlike files via ARB
                        (default: arb_textedit)

                    ARB_XTERM

                            The call which is needed to create a normal xterm
                            (default: xterm -sl 1000 -sb -geometry 120x40 )

                    ARB_XCMD

                            The call which is needed to create a xterm invoking external programs
                            (default: xterm -sl 1000 -sb -geometry 140x30 -e ).

                    USER

                            your username (normally set by shell).

                    ARB_PID

                            internal PID for communication (set by the 'arb' script)

                    ARBMACRO

                            directory name where global ARB-macros may be provides by system administrator
                            (default: $ARBHOME/lib/macros )

                    ARBMACROHOME

                            directory name where your local ARB-macros will be saved to/loaded from
                            (default: $HOME/.arb_prop/macros )

                    ARB_GS

                            name of postscript viewer used by ARB
                            (default: 'gv' or 'ghostview')

                    ARB_WORKDIR

                            extra directory appearing in ARB-File-Browsers
                            (default: none)

                    ARB_DOC

                            directory where ARB searches for *.ps or *.ps.gz
                            (default: $ARBHOME/lib/help)

NOTES		Short description of how to set an environment variable:

                        1. for bash users (add to .bashrc):

                           ARB_GS='my_special_postscript_viewer'
                           export  ARB_GS

                        2. for tcsh users (add to .cshrc):

                           setenv ARB_GS 'my_special_postscript_viewer'

EXAMPLES	None

WARNINGS	None

BUGS		No bugs known