The earliest Web browsers focussed on the display of textual information. When graphics were added, essentially only image graphics and image file formats were supported. For a significant range of applications, image graphics has severe limitations, for example in terms of file size, download time and inability to interact with and modify the graphics client‐side. Vector graphics may be more appropriate in these cases, and this has become possible through the introduction of the WebCGM and Scalable Vector Graphics (SVG) formats, both of which are open standards, the former from ISO/IEC and W3C and the latter from W3C. This paper reviews the background to Web graphics, presents the WebCGM file format, and gives a more detailed exposition of the most recent format, SVG. The paper concludes with reflections on the current state of this area and future prospects.

A number of recent papers have considered the quadratic hash method when the table size is a prime number. This paper shows that, contrary to what is normally assumed, the method can be used for tables whose size is a power of 2 without the usual drawback that the period of search is significantly less than the table size.

This paper describes the preprocessor written to replace the original input routine of the Atlas ALGOL compiler. The main purpose of this preprocessor is to allow programs punched in a wide range of conventions and codes to be run, without change, on Atlas.