So here is a first attempt:

- Based on Didot font (for those who like typography)

- Reflections, rotations and kerning applied to symbols

- If too _obscure_ this can be further stylised

- No colour code for now (colours are arbitrary here)

This means that we can produce Latex/CSS code to dynamically produce the logo.

Presented below upright. The thick lines represent the transformation process (the interface).

If rotated 90 degrees clockwise, the pan symbol can represent an eye.

It rotated 90 degrees counter-clockwise, the pan symbols can represent a scanner, a leaf (symbolising a piece of paper),...

Further styling can be done by blending the two symbols in a _flow of documents_. I'll sketch that if of any interest.

I also attache the SVG and Adobe Illustrator files.

On Thursday, December 8, 2016 at 1:58:58 PM UTC+1, John MacFarlane wrote:

+++ Joost Kremers [Dec 08 16 13:31 ]:
>
>On Thu, Dec 08 2016, Kolen Cheung wrote:
>>Over there I draft a design of pandoc logo by playing on the
>>symmetry between P and d. One expression of that idea is an axe
>>looks like P and the same thing rotated looks like d. The reason an
>>axe is used is because this kind of echo pandoc being like a Swiss
>>army knife, where an axe is like that on steroid. A proper design of
>>that axe should resemble the letter P and d better.
>
>FWIW, I don't associate an axe with "Swiss army knife on steroids". A
>Swiss army knife gets its reputation because instead of being just a
>knife, it has a lot of different tools for different jobs. An axe is,
>well, just an axe, and sophistication is not what comes to mind when I
>think about its cutting power.
>
>That plus the fact that I think it'll be difficult if not impossible
>to make an axe look like a p or d means that I would suggest not to
>pursue the idea of using axes. I do very much like the idea of
>integrating a p and a d into the logo, and sadly have no better ideas
>to offer. :-(

I once thought about using the two letter combination

∀Δ

∀ for pan (all)
Δ for doc

A good graphic designer might be able to combine these
shapes in a pleasing way.  But, maybe too obscure.