Open a terminal, type "man 1 ln". When the text shows up, you are usually in a less(1) paged window - type "/-s" to search for the option, "N" key to search forward, shift+"N" to search backwards.

If you see a reference like $name($number), you can get to the manpage with "man $number $name".

"man man" for the general man invocation, and "man less" on how to interact with the less pager.