You have two ways of loading it...
LOAD "TXT:<Filename>",FALSE OUT <String$>
<String$> = LOAD("TXT:<Filename>",FALSE)
As always, you should first check if the file exists with CHKFILE, like this...
IF CHKFILE("TXT:<Filename>") THEN
<String$>=LOAD("TXT:<Filename>",FALSE)
ENDIF
1そうだね プレイ済み