Both Workbench and Antdepo (and the 3rd-party software they rely on) are
eminently relocatable. However, the following layout is the ³best-practice²
convention that we¹ve adopted (best viewed using a fixed-width font) for
default installation:

CTIER_ROOT                                  Defaults to ³$HOME/ctier² on
Unix/Linux and ³C:\ctier² on Windows, but is relocatable
    antdepo                                 ANTDEPO_BASE
    demo                                    Directory of demonstration
applications
        headlines                           The Headlines demonstration
application
            httpd                           Apache web server configuration
and log directory
            mysql                           MySQL data, configuration and
log directory
            pkgs                            Software Installations to
support the Headlines demonstration application
                httpd-2.2.4                 Apache web server installation
directory
                jdk1.5.0_11                 JAVA_HOME
                mysql-5.0.41-linux-i686     MYSQL_HOME
                apache-tomcat-5.5.23        CATALINA_HOME
            tomcat                          CATALINA_BASE
    pkgs                                    Software installations to
support the ControlTier installation
        ControlTier-3.0rc3                  Staging directory for the
ControlTier installer
        antdepo-1.2.12                      ANTDEPO_HOME
        apache-forrest-0.7                  FORREST_HOME
        apache-tomcat-4.1.36                CATALINA_HOME for the
ControlTier installation
        graphviz-2.8                        GRAPHVIZ_HOME
        j2sdk1.4.2_13                       JAVA_HOME for the ControlTier
installation
    src                                     ControlTier source code
        elements                            Elements solution library module
source
        headlines                           Headlines custom library module
source
        ...
    workbench                               CATALINA_BASE for the
ControlTier installation

Some benefits of this layout are:

* All package dependencies (beyond the OS installation) are contained within
the ControlTier root
* The layout consistently separates package software installs from runtime
files (³HOME vs BASE²) facilitating easier upgrade
* There¹s room for multiple demos to be staged (e.g. PioneerCycling), and
the demo directory can be omitted completely to save space.
* Appropriate parts of the hierarchy can be ³culled² to produce a minimum
client-only install with the same basic structure (e.g. no Tomcat, Forrest
or Graphviz)
* There¹s a single well-known location for (ProjectBuilder module and
documentation) source code.

Note that setting up a distinct CATALINA_BASE under Tomcat 4.1 requires
doing what I call the ³split²:

* After unpacking the Tomcat distribution into $CATALINA_HOME, move or copy
the ³conf², ³shared², ³temp², ³webapps² and work directories to
$CATALINA_BASE
* Edit $CATALINA_BASE/webapps/admin.xml and
$CATALINA_BASE/webapps/manager.xml to point the docBase to
$CATALINA_HOME/server/webapps

Anthony.