Features introduced in 5.4

• Expressions and functions use 64-bit integer arithmetic. See integer
• 2D plot styles polygons, spiderplot, arrows
• 3D plot styles boxes, circles, polygons, isosurface and other representations of gridded voxel data
• Data preprocessing filter zsort
• Construction of customized keys using keyentry
• New LaTeX terminal pict2e supersedes older terminals latex, emtex, eepic, and tpic. The older terminals are no longer built by default
• set pixmap imports a png/jpeg/gif image as a pixmap that can be scaled and positioned anywhere in a plot or on the page
• Enhanced text mode accepts \U+xxxx (xxxx is a 4 or 5 character hexadecimal) as representing a Unicode code point that is converted to the corresponding UTF-8 byte sequence on output
• Revised syntax for with parallelaxes allows convenient iteration inside the plot command, similar to plot styles histogram and spiderplot