# Unseen, but Hidden in Plain Sight

This riddle has a single, one word answer, with an explanation as to how you found it. You may be able to make a good, or even correct, guess from just the contents of the poem below, but if you've solved it in the way I intend, you will know without a doubt.

The answer to this riddle
Is hidden in plain sight,
Though you may need to fiddle,
To solve the question right.

I'm something that you never see,
At least not at a glance,
Though if you poke around in C,
You often get the chance.

Alone, on *Nix, I shall suffice,
In my purpose I'll succeed,
But Win's a world, cold as ice,
I need a coachman to proceed.

You use me many times each day,
Though perhaps you didn't know,
You make me in a different way,
When at home or on the go.

• Does this need knowledge of computery stuff (C, *Nix, ...) in order to solve it? If so, I suggest tagging it computer-puzzle. Dec 15, 2017 at 20:28
• @Randal'Thor It does require a bit of low-level computer knowledge to understand the meaning of each stanza, but not necessarily to solve it (It has the enigmatic-puzzle tag for a reason). I've added the tag anyways, because I can see how it would still be applicable. Dec 15, 2017 at 20:35
• Isn't Win also a *Nix? Dec 15, 2017 at 20:47
• @ibrahimmahrir Windows is separate from Linux and Unix. Dec 15, 2017 at 21:06

newline

The answer to this riddle
Is hidden in plain sight,
Though you may need to fiddle,
To solve the question right.

This has double meaning:
1. To look at the source of the question for clues
2. The newline is hidden in plain sight of the poem's structure

I'm something that you never see,
At least not at a glance,
Though if you poke around in C,
You often get the chance.

We don't really see whitespace such as newlines. In C, you could see the newline character encoded as '\n'.

Alone, on *Nix, I shall suffice,
In my purpose I'll succeed,
But Win's a world, cold as ice,
I need a coachman to proceed.

In Linux/Unix, a text line ending is encoded as '\n' (line feed), while in Windows, a carriage return is added, resulting in '\r\n'.

You use me many times each day,
Though perhaps you didn't know,
You make me in a different way,
When at home or on the go.

When working with a word processor/text editor, pressing enter adds a newline.

How I arrived at this specific word:

The first and second verses give strong clues to look into the source. Looking into the edit of the answer yields some hidden information.
1. Congrats_you_found_the_hidden_clue/now_our_friend_morse_will_see_you_through

In addition you can find
1. Lines starting with [][1] or [][2]
2. Lines ending with <br> or '  ' (two spaces)

Interpreting the whole thing as a morse code puzzle, I tried using [][1] as the start of a new character, <br> as a dash, and '  ' (two spaces) as a dot. Reading through the poem linearly spells out:

-. . .-- .-.. .. -. . (newline).

Credit goes to pacoverflow for doing much of the heavy lifting.

• +1. Actually, the <br> is a dash, and the two spaces are a dot. Dec 15, 2017 at 23:53

linefeed

The answer to this riddle Is hidden in plain sight,

You have to edit it to see hidden formatting and a couple of hints:
1. Congrats_you_found_the_hidden_clue/now_our_friend_morse_will_see_you_through

Though you may need to fiddle, To solve the question right.

There are some mistakes, that I will point out later.

I'm something that you never see, At least not at a glance,

LF, or linefeed, is a special character in computing that represents a newline. You don't actually see that character on the screen (at least not "LF" on the screen).

Though if you poke around in C, You often get the chance.

You can "see" the LF character by inspecting strings in code using C or other programming languages. LF has ASCII value 10.

Alone, on *Nix, I shall suffice, In my purpose I'll succeed,

On Unix/Linux systems, LF is the only character required to specify a newline.

But Win's a world, cold as ice, I need a coachman to proceed.

Windows systems require the CR (carriage return) in addition to the LF.

You use me many times each day, Though perhaps you didn't know, You make me in a different way,

People press Enter to make a newline many times a day, but they might not realize they are specifying the special LF (and possibly CR) character in doing so.

How I found out the answer:

When editing the question, and seeing brackets in front of certain lines, and <br> after certain lines, I took the hint about Morse to mean that either:
* each line with brackets in front of it represents a dot, and each line without brackets in front of it represents a dash
* each line with <br> after it represents a dot, and each line without <br> after it represents a dash

So the first stanza represents L in Morse code (using the brackets), the second stanza represents F (using the trailing <br>s), and the fourth stanza represents R (using the brackets; remember the second hint that the last line doesn't matter).

One line said you "need to fiddle". The third stanza represents Q in Morse code (using the brackets), but should be changed to have no brackets before the first line, brackets before the second line, no brackets before the third line, and brackets before the fourth line, so that it represents C.

The stanzas spell out LFCR in Morse code.

• Very, very close! You'll note that in the SE editor, there's two different ways to represent a "linefeed" character, and I used a mix of both of those between lines in the poem. Dec 15, 2017 at 22:35
• Not quite there! Try using the brackets as character separators for the last bit. The final answer is 7 characters long. Dec 15, 2017 at 23:00
• @DqwertyC One quibble I would have is that if "newline" is the answer, then the third stanza is not accurate. A newline suffices for both *nix and Windows, since newline is either one or two characters depending on the platform. "Linefeed" makes the third stanza accurate, since a linefeed alone suffices on *nix, but Windows needs both the linefeed and the carriage return. Dec 16, 2017 at 8:39
• I realized that after you posted your answer. In most of my experience, I've heard '\n' referred to as the "newline character," and forgot that the technical name was "line feed". Dec 16, 2017 at 18:22