## Changes Introduced in V1.8-5

The following describes the most significant changes which occurred in the AST library between versions V1.8-4 and V1.8-5:

1. The PlotPlot class defines new graphical elements Axis1, Axis2, Grid1, Grid2, NumLabs1, NumLabs2, TextLab1, TextLab2, Ticks1 and Ticks2. These allow graphical attributes (colour, width, etc) to be set for each axis individually. Previously, graphical attributes could only be set for both axes together, using graphical elements Axes, GridGrid, NumLabs, TextLabs and Ticks.