← Back to the field guide

THE COMPLETE CHART

The Periodic Table of Marks

A FIELD GUIDE TO PUNCTUATION, CHARTED

About the chart

Every specimen in the guide, numbered and seated with its family. Tap a cell to open its card. New marks take the next number and a seat of their own.

Swap dates for code points. Composed = more than one character.

Slide the chart sideways

Left edge · More marks to the right

TONE & DOUBT 10REASONING 2THE EVERYDAY MARKS 20SPECIAL JOBS 14

* Year of earliest known use.

Play the hunt to unlock free posters

Find all 8 hidden interrobangs to unlock the downloads.

Play the hunt →
See the free posters & wallpapers
Low-resolution preview of the periodic table, visibly stamped PREVIEW
Low-resolution preview only. Your unlocked files have no watermark.

Find all eight to unlock

  • Print-ready PDFA printable PDF of the complete chart.
  • Desktop wallpaperThe chart sized for a computer screen.
  • Phone wallpaperA tall version for your phone.
  • Letter-size printA vector file for letter-size printing.
  • 24 × 18 printA vector file for a larger wall poster.
  • Print spec sheetPaper, sizing and print setup notes.
  • Vector posterThe master SVG, sharp at any size.

Teaching a class? Get the free Educators kit. No hunt required.

Why we built the chart this way

Mendeleev left empty seats for elements nobody had found yet. This chart works the same way. Every mark gets a permanent number the day it joins the guide, and numbers never change: No. 01 is the Interrobang, because of course it is. The first six match the shirt series, since the shirts and the chart catalog the same specimens. Families group marks by the job they do: tone and doubt, reasoning, the everyday workhorses, special jobs. A new mark does not squeeze in anywhere it fits; it takes the next number and its family's table grows a new seat. Others have charted punctuation before (Curtis Newbold's 2016 poster put 14 common marks in element boxes). This one keeps going: every mark, including the obscure, the proposed and the nearly forgotten, each one clickable to its card, each with its story and its voice, and room for the marks nobody has found yet.

SPECIMEN SUBMISSIONS

Think you found a mark?

The guide keeps growing, and there are more out there. Send the mark, what it is for, and where you found it. If it earns a card, you get the credit on it.

Send your mark on SimpleXOr find Brad on LinkedIn

Nothing publishes itself. Every mark gets checked, and only good ones get in. Email works too.

Help fund the field guide. The specimen tees are in the shop. Shop the tees