A Persistent Graphics Facility for the ICL Perq

Ronald Morrison, AL Brown, PJ Bailey, AJT Davie, Alan Dearle

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The facilities of the PS-algol programming language are described in this paper to show how they may be used to provide an integrated programming support environment. The persistent store mechanism and the secure transaction facilities provide the basic environment in which an integrated system may be implemented. In particular the paper makes use of the data type picture of PS-algol to show how such an environment may be built for a graphics system ideal for use with a medium range computer workstation. An implementation of a picture editor on the ICL PERQ workstation is described to show the utility of the system.
Original languageEnglish
Pages (from-to)351-367
Number of pages17
JournalSoftware: Practice and Experience
Issue number4
Publication statusPublished - Apr 1986


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