Sets the file pointer of the write stream file so that the next PRINT, etc., begins writing at the
charpos-th character in the file, counting from 0.
SETWRITEPOS 0 starts writing from the beginning of the file.)
This is meaningless if the write stream is .
OPENWRITE "dummy.fil SETWRITE "dummy.fil PRINT "Hello SETWRITEPOS 0 TYPE "J SETWRITE  CLOSE "dummy.fil OPENREAD "dummy.fil SETREAD "dummy.fil SHOW READLIST[Jello]
SETREAD  CLOSE "dummy.fil