aTE(2,0,"Creating groups","files/creating_groups.htm");\r
aTE(2,0,"Editing groups","files/editing_groups.htm");\r
aTE(2,0,"Using operations on groups","files/using_operations_on_groups.htm");\r
aTE(2,0,"Constructing groups of specific elements","files/constructing_groups_of_specific_elements.htm");\r
aTE(2,0,"Creating groups","files/creating_groups.htm");\r
aTE(2,0,"Editing groups","files/editing_groups.htm");\r
aTE(2,0,"Using operations on groups","files/using_operations_on_groups.htm");\r
aTE(2,0,"Constructing groups of specific elements","files/constructing_groups_of_specific_elements.htm");\r