CCP4mg is a molecular-graphics program designed to provide rapid access to both static and dynamic representations of macromolecular structures. It has been updated with a new interface offering more sophisticated atom-selection options and a wizard for generating complex scenes. These scenes can include coordinate-derived and abstract graphical objects, such as text, vectors, geometric shapes, and imported images, which can enhance visualizations and reduce the need for subsequent editing. Version 2 of CCP4mg features a new GUI toolkit and includes a built-in rendering module for publication-quality images. CCP4mg is an easy-to-use yet flexible system for displaying macromolecular structures and their properties. It allows the creation of complex scenes and movies, with features such as automatic generation of multiple drawing styles, highlighting equivalent structural features, and drawing molecular surfaces. It also supports the prediction and visualization of quaternary structure and molecular interfaces using PISA. Electron density can be displayed in various styles, and the program includes tools for text annotations, overlays, and vectors to enhance scenes. The program provides tools for creating complex scenes and movies, including the ability to generate multiple drawing styles, highlight equivalent structural features, and draw molecular surfaces. It also supports the prediction and visualization of quaternary structure and molecular interfaces using PISA. Electron density can be displayed in various styles, and the program includes tools for text annotations, overlays, and vectors to enhance scenes. CCP4mg offers a range of features for surface visualization, structure alignment, and sequence analysis. It includes a sequence viewer for highlighting sections of the structure and aligning multiple sequences. PISA is used for predicting protein interfaces and assemblies. The program can generate publication-quality images and movies, with support for stereo pairs and transparent backgrounds. Version 2 of CCP4mg includes a new programming toolkit, enhancing features such as the toolbar and program-status history, an inbuilt help system, automatic updates, better use of graphics hardware, batch mode image rendering, remote control, and plug-in applications. It also features a single-window interface, improving usability and integration with other programs. The program is free software and can be downloaded from its website, with extensive documentation and tutorials available. The design and implementation of CCP4mg use a combination of C++ and Python, with the MMDB and Clipper libraries for data handling. The program is designed for use in structural biology and is supported by the Science and Technology Facilities Council through CCP4.CCP4mg is a molecular-graphics program designed to provide rapid access to both static and dynamic representations of macromolecular structures. It has been updated with a new interface offering more sophisticated atom-selection options and a wizard for generating complex scenes. These scenes can include coordinate-derived and abstract graphical objects, such as text, vectors, geometric shapes, and imported images, which can enhance visualizations and reduce the need for subsequent editing. Version 2 of CCP4mg features a new GUI toolkit and includes a built-in rendering module for publication-quality images. CCP4mg is an easy-to-use yet flexible system for displaying macromolecular structures and their properties. It allows the creation of complex scenes and movies, with features such as automatic generation of multiple drawing styles, highlighting equivalent structural features, and drawing molecular surfaces. It also supports the prediction and visualization of quaternary structure and molecular interfaces using PISA. Electron density can be displayed in various styles, and the program includes tools for text annotations, overlays, and vectors to enhance scenes. The program provides tools for creating complex scenes and movies, including the ability to generate multiple drawing styles, highlight equivalent structural features, and draw molecular surfaces. It also supports the prediction and visualization of quaternary structure and molecular interfaces using PISA. Electron density can be displayed in various styles, and the program includes tools for text annotations, overlays, and vectors to enhance scenes. CCP4mg offers a range of features for surface visualization, structure alignment, and sequence analysis. It includes a sequence viewer for highlighting sections of the structure and aligning multiple sequences. PISA is used for predicting protein interfaces and assemblies. The program can generate publication-quality images and movies, with support for stereo pairs and transparent backgrounds. Version 2 of CCP4mg includes a new programming toolkit, enhancing features such as the toolbar and program-status history, an inbuilt help system, automatic updates, better use of graphics hardware, batch mode image rendering, remote control, and plug-in applications. It also features a single-window interface, improving usability and integration with other programs. The program is free software and can be downloaded from its website, with extensive documentation and tutorials available. The design and implementation of CCP4mg use a combination of C++ and Python, with the MMDB and Clipper libraries for data handling. The program is designed for use in structural biology and is supported by the Science and Technology Facilities Council through CCP4.