Figure 7.1 Modifying a circle grob R code	Figure 7.2 Listing grobs in a lattice plot R code	Figure 7.3 Editing grobs R code	Figure 7.4 The structure of a gtree R code
Figure 7.5 Editing a gtree R code	Figure 7.6 Graphical parameters in a gtree R code	Figure 7.7 Editing the graphical context R code	Figure 7.8 An xaxis grob R code
Figure 7.9 Reordering children in a gtree R code	Figure 7.10 Calculating the size of a grob R code	Figure 7.11 Grob dimensions by reference R code	Figure 7.12 Calculating grob locations R code
Figure 7.13 Calculating null grob locations R code	Figure 7.14 Packing grobs by hand R code	Figure 7.15 Editing the grobs in a lattice plot R code	Figure 7.16 Working with ggplot2 grobs R code