\chapcontents {1}{Preface}{3} \seccontents {1.1}{Root Systems} {3} \seccontents {1.2}{Citing Unipot} {3} \chapcontents {2}{The GAP Package Unipot}{4} \seccontents {2.1}{General functionality} {4} \seccontents {2.2}{Unipotent subgroups of Chevalley groups} {4} \seccontents {2.3}{Elements of unipotent subgroups of Chevalley groups} {7} \seccontents {2.4}{Symbolic computation} {12} \chapcontents {}{Bibliography}{13} \chapcontents {}{Index}{14}