WEL V1.3 error message date: 2024/04/18  time: 16:20:53 
Program depth: 1, name: FORM#0: strform()
line(1): 1234{$-a}5678
                ^
               ÀÓ°è ¿µ¿ª º¯¼ö¸¦ ´ëÀÔ ¶Ç´Â ÇØÁ¦ÇÒ ¼ö ¾ø½À´Ï´Ù!, º¯¼ö¸í: 'a' [Online µµ¿ò¸»]

Program depth: 1, name: e20-4.wel
line(4): a= strform("1234{$-a}5678");
                                    ^