This is an interactive shell for Perl, commonly known as a REPL - Read,
Evaluate, Print, Loop. The shell provides for rapid development or
testing of code without the need to create a temporary source code file.

Through a plugin system, many features are available on demand. You can
also tailor the environment through the use of profiles and run control
files, for example to pre-load certain Perl modules when working on a
particular project.