I'd format the comments to be aligned like so:

``` clojure
(let [db-cur (coll/find :languages {:language "Clojure"})]
  (reset-options db-cur)             ;; cleans previous settings
  (add-option! db-cur :notimeout)    ;; adds only one options
  (remove-option! db-cur :notimeout) ;; removes specific option, keep other untouched

  (add-options db-cur {:notimeout true :slaveok false})
  (add-options db-cur [:notimeout :slaveok])
  (add-options db-cur :notimeout)

  (add-options db-cur com.mongodb.Bytes/QUERYOPTION_NOTIMEOUT)
  (get-options db-cur)    ;; returns map of settings, where values show current state of option
  (format-as db-cur :map) ;; turns lazy-seq of clojure map
  )
```

Note that the snippet in the diff is missing one closing paren after `add-options`.