A list of several important variable values for tableview programming in SAP

Key variable values for TC control programming in SAP

	BPO	Outside BPO	Within Pai	Outside Pai
Sy-stepl	From 1, each cycle automatically adds 1	0	From 1, each cycle automatically adds 1	0
Sy-loopc	Tableview maximum number of records displayed (automatic)	0	Tableview maximum number of records displayed (automatic)	0
Top_line	The start value is the top_line value outside the loop. 1 is automatically added for each loop, and the end value is returned to the original value.	The record number of the top row	New top_line, value unchanged	The record number corresponding to the top row (new)
Cuurent_line	The start value is the top_line value outside the loop, and 1 is automatically added for each loop.	Corresponding record number in the bottom row	Set to the value of top_line outside the previous BPO.	The record number corresponding to the bottom row (new)
Lines	Total number of records to be displayed, generally set to the number of records in the internal table