Seaside support is split into a number of separately loadable packages. Here are the ones that are available in GNU Smalltalk 3.0a:
The Seaside package is a collective package that loads the first two.
First of all, you should create a new image with the package loaded. In GNU Smalltalk, the image acts as a kind of cache and preloading the package will speed up further operation.
In the remainder of this section,
$ is used as the prompt for things you type at the shell, and
st> is used as the prompt for things you type for GNU Smalltalk.
$ gst st> PackageLoader fileInPackage: 'Seaside' st> PackageLoader fileInPackage: 'Seaside-Development' st> PackageLoader fileInPackage: 'Seaside-Examples' st> ObjectMemory snapshot: 'seaside.im'