Here are the classes, structs, unions and interfaces with brief descriptions:arrow_t Defines an arrow address dblist Phantom documentation used to test the functioning of doxygen elem Phantom documentation used to test the functioning of doxygen fsm_struct_journal Required to initialise a double-chained list fsm_struct_journal_unit Structure of a journal element fsm_struct_list_data Phantom documentation fsm_struct_list_disp Phantom documentation fsm_struct_list_tool Phantom documentation graphics_stack_t Structure describing a gl_area and its parameters, used to create a table of Gem-graph client current gl_areas pile Phantom documentation used to test the functioning of doxygen preferencesslist Phantom documentation used to test the functioning of doxygen Stack Phantom documentation stack_index_t Phantom documentation used to test the functioning of doxygen TreeNode_t Phantom documentation used to test the functioning of doxygen