Modules can be added to any of the systems that support dynamic modules. All OpenCL 2.x Modules and new 3.0 modules are optional. Two individual Lunar Modules and two command modules were constructed for filming. Modular synthesizers are synthesizers composed of separate modules of different functions. NetBeans allows applications to be developed from a set of modular software components called "modules". The modular synthesizer is a type of synthesizer consisting of separate interchangeable modules. They may interface with application-specific modules or shields. Each protocol requires the installation of software modules. Power was provided by several photovoltaic arrays attached directly to the modules. Drupal isolates core files from contributed modules and themes. It is commonly implemented as a library of linkable modules. More data types are supported based on Redis Modules API. These hardware expansion modules and accessories were sold separately. Several companies have begun embedding electronics into PV modules.