Computer software consultancy; Computer software design; Computer software design and updating; Computer software design for others; Computer software design, computer programming, and maintenance of computer software; Computer software development; Computer software installation and maintenance; Computer hardware and software design; Computer programming and software design; Advisory services relating to computer software; Consultation services relating to computer software; Copying of computer software; Creating, maintaining, and modernizing computer software; Custom design of computer software; Customizing computer software; Debugging computer software for others; Design and development of computer software; Design and development of computer game software and virtual reality software; Design and writing of computer software; Design, updating and rental of computer software; Design, upgrading and rental of computer software; Developing computer software; Developing and updating computer software; Installation and maintenance of computer software; Installation of computer software; Maintenance and updating of computer software; Maintenance and upgrading of computer software; Maintenance of computer software; Maintenance of computer software relating to computer security and prevention of computer risks; Programming of computer software for others; Repair of computer software; Research and development of computer software; Services for maintenance of computer software; Services for updating computer software; Testing of computer software; Troubleshooting of computer software problems; Updating and maintenance of computer software; Updating of computer software; Updating of computer software for others; Updating of computer software relating to computer security and prevention of computer risks; Upgrading of computer software; Writing and updating computer software