Ver. 0.7-0.9 Added linear regression lines and linear regression equations. Some smaller bugs were fixed. Ver. 0.6 Added pictex command to forward raw pictex code to the pictex interpreter. Ver. 0.5 Added legends Ver. 0.4 Added significance indicators over data points. xticlabels can be set for all kind of chart types. Ver. 0.3 Added xgrid and ygrid commands for grid lines. Ver. 0.2 Added a xticlabels command that allows to define labels for the x-axis tics in bar graphs. Ver. 0.1 Added a size command that allows to define the width and height of the chart. The default is 6.0x6.0 cm. Ver. 0.0 First version: no changes