# PLT software

The PLT software distribution includes the following executables.

## Help Desk

Help Desk provides information about PLT Software in a user-friendly, searchable environment.

On this machine, Help Desk is ``.

## DrScheme

DrScheme is a user-friendly environment for creating and running Scheme programs. For more information, see How to use DrScheme.

On this machine, DrScheme is ``.

## DrScheme Jr

DrScheme Jr is the text-only version of DrScheme. For more information, see How to use DrScheme.

On this machine, DrScheme Jr is ``.

## MzScheme

The MzScheme executable runs Scheme programs in plain-text mode. MzScheme is a run-time environment only; unlike DrScheme, MzScheme provides no development support.

For more information about MzScheme, see .

On this machine, MzScheme is ``.

## MrEd

The MrEd executable runs graphical Scheme programs. MrEd is a run-time environment only; unlike DrScheme, MrEd provides no development support.

For more information about MrEd, see .

On this machine, MrEd is ``.

## Setup PLT

Setup PLT performs certain installation duties, such as compiling DrScheme's source code to make DrScheme start faster.

Setup PLT also unpacks and installs downloadable `.plt` distributions, such as the MrSpidey distribution archive.

On this machine, Setup PLT is ``.

## mzc

The mzc executable compiles MzScheme and MrEd programs to byte code or to native code form. The latter requires a C compiler (which your system must provide). The resulting byte code or native code can be loaded into MrEd or MzScheme.

On this machine, mzc is ``.

## Games

The Games executable demos a few small games implemented in Scheme.