PUT 语句中的 OVERPRINT causes the values that follow the keyword OVERPRINT to
print on the most recently written output line.
PUT 语句中的 OVERPRINT 将 OVERPRINT 后面引号内的字符打印在前面的输出行下面.
OVERPRINT 可以与列指针 @ 配合使用.
Example:
data ;
put 'L1: ' 'example of overprint ' overprint '------------------------';
put 'L2: ' 'example of overprint ' overprint '----' ;
put 'L3: ' @10 'example of overprint ' overprint @10 '====================' ;
put 'L4: ' 'example of overprint ' overprint @10 '====5====0====5====0' ;
put 'L5: ' @10 'example of overprint ' @10 '____________________' ; /* NO OVERPRINT */
run;
* LOG *
L1: example of overprint
------------------------
L2: example of overprint
----
L3: example of overprint
====================
L4: example of overprint
====5====0====5====0
L5: ____________________