1、报表事件
INITIALIZATION.
START-OF-SELECTION.
END-OF-SELECTION.
2、选择屏幕事件
在INITIALIZATION和START-OF-SELECTION之间触发，对应于对话屏幕的 PBO、PAI、POH、POV事件
AT SELECTION-SCREEN { OUTPUT }
| { ON {para|selcrit} }
| { ON END OF selcrit }
| { ON BLOCK block }
| { ON RADIOBUTTON GROUP radi }
| { oN {HELP-REQUEST|ALUE-REQUEST}
{ FOR {para|selcrit-low|selcrit-high} }
| { ON EXIT-COMMAND }
| { }.
3、选择屏幕事件
GET node [LATE] [FIELDS f1 f2 ...].
4、列表事件
TOP-OF-PAGE.
END-OF-PAGE.
AT LINE-SELECTION.
AT USER-COMMAND.
AT pf<nn>.