APPEND
From QB64 Wiki
APPEND is used in an output type OPEN statement to add data to the end of a file.
- OPEN FileName$ FOR APPEND AS #1
- Creates an empty file using the filename if none exists.
- Mode places new data after the previous data in the file.
- Mode can use PRINT (file statement), WRITE (file statement) or PRINT USING (file statement) to output file data or text.
See also: OUTPUT, RANDOM, INPUT (file mode), BINARY