SAP ABAP Program LCTL6F18 (FORM update_alv_node_selection) is using

• Class (4)
• Class Method (3)

#	Object Type	Object Name	Object Description	Note
1	Class	CL_SALV_ITEM	Item in Tree Structure
2	Class	CL_SALV_NODE	Single Node Object of Tree Structure
3	Class	CL_SALV_NODES	All Node Objects of Tree Structure
4	Class	CX_SALV_MSG	ALV: General Error Class with Message