How to use it in `/etc/fstab` ?

Is there an example for `/etc/fstab` ?
I get "wrong fs type, bad option, bad superblock on /dev/sda6, missing codepage or helper program, or other error" even with the `/etc/mtab` line.

```
/dev/sda6 /mnt sdfat rw,relatime,fs=exfat,fmask=0022,dmask=0022,codepage=cp437,iocharset=utf8,namecase=0,symlink=0,bps=512,errors=remount-ro 0 0
```