[NTG-context] break strings

Hi, say I have arbitrary string of alphanumeric characters: \starttext \showframe 9769387937933hhgiuiuziuziduzid93739837fhieuhifeuhfeiu39739837938398zfhfdkuhfiufhz398739837r98z379dihhfiu \stoptext How can I (automatically) force a break at end of line, without manually adding \crlf or \break at break points? Steffen