Treasure Hunt Games for Adults

Press Pick 10 new clues for nine stops around your home and a final clue for the treasure.

  1. I have a handle and wheels, and I spend most of the year empty under something.Hide the next clue: the suitcase. Thread it through the handle, or zip it in the outer pouch.Trail
  2. A stack of blank pages waits here to be fed, one sheet at a time.Hide the next clue: the printer tray. Feed the strip in face down above the unused sheets, then close the drawer.Trail
  3. Faces under plastic, page after page, and nobody in here has aged a day.Hide the next clue: the photo album. Stand it in the gutter between the opening pair of pages.Trail
  4. The breeze plays me, and I never learned a second tune.Hide the next clue: the wind chime. Tie it to the lowest chime with string.Trail
  5. Bedside, one drawer. I mind your glasses, your charger and the novel you never finish.Hide the next clue: the nightstand. Lay it in the drawer, or under the lamp.Trail
  6. A dish that serves metal. Check here before you say you lost them.Hide the next clue: the key bowl. Slide the strip beneath the dish so one corner peeks out.Trail
  7. I bend my neck over your work and never read a word.Hide the next clue: the desk lamp. Wind it once around the neck, below the hinge, and tape the end.Trail
  8. Two thin arms wave at the rain and rest when the sky clears.Hide the next clue: the windshield wiper. Fold it into a zip bag under the wiper arm on the driver's side. The car stays parked at home.Trail
  9. Flip me down when the low sun glares. Some of my kind hide a mirror.Hide the next clue: the sun visor. Tuck it behind the visor on the driver's side. The car stays parked at home.Trail
  10. The map runs out here. Dig no holes: the treasure is ____.The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.Treasure

How it works

Three treasure hunt games for adults share 40 stops at home: a trail of riddles, a trail of word puzzles and a look-around trail. Every deal is nine stops and a final clue with a blank for the treasure.

Read the full guide

Build a trail your home can run

The page opens on Riddles. Word puzzles deals anagrams and names with the vowels taken out, and Look-around deals clues solved by what is in sight. The menu under the button keeps the trail to one part of the home. Lock each clue whose stop you have and Swap the rest.

Print, cut and hide backward

Press Hide all answers, then Print: each clue prints over a blank line, with the stops on a last page for the host. Write the treasure's place in the blank of the final clue. Hide the treasure first and work backward: each strip waits at the stop the strip before it names.

Tips
  • No car or yard? Pick a room in the menu and the whole trail stays indoors.
  • For two teams, print a riddle trail and a word-puzzle trail and start both at once.

Questions and answers

What are some treasure hunt game ideas for adults?

Three are built here: a riddle trail, a word-puzzle trail of anagrams and missing vowels, and a look-around trail. For a list of things to find or photograph in any order, use scavenger hunt ideas for adults.

Where do you hide treasure hunt clues at home?

At stops that stay put and that adults pass every day: the spice rack, the printer tray, the key bowl, the glovebox of a parked car. The note under each clue says where the strip goes.

How do you make a treasure hunt harder for adults?

Deal Word puzzles: an anagram such as CHARD SKI hides its stop better than a rhyme does. Hand out the strips with the answers hidden and keep the last printed page, which lists every stop.

What can the treasure be?

Anything that fits the last hiding place: a wrapped present, a dessert, tickets or a gift card. For a card, the gift card hunt has clues that hint at what it buys.

All 128 clues

Riddles 40

  • A cup that never held a drink: only points, erasers and ink. Hide the next clue: the pencil cup. Curl it around the inside of the cup.
  • A dish that serves metal. Check here before you say you lost them. Hide the next clue: the key bowl. Slide the strip beneath the dish so one corner peeks out.
  • A glove with one thumb and no partner. It handles the heat for you. Hide the next clue: the oven mitt. Slide the strip deep inside, past the wrist cuff, so it cannot fall out.
  • A rail that carries no train: only damp cotton hung out to dry. Hide the next clue: the towel rack. Slip it between the towel and the rail.
  • A stack of blank pages waits here to be fed, one sheet at a time. Hide the next clue: the printer tray. Feed the strip in face down above the unused sheets, then close the drawer.
  • A stool nobody sits on, for the part of you that walked all day. Hide the next clue: the footstool. Tape it underneath, or lift the lid if it has one.
Show all 128 clues (122 more)

Riddles, continued

  • A tub with no faucet where the guests arrive by air. Hide the next clue: the birdbath. Weigh it down with a pebble on the rim's dry side, sealed in a sandwich bag.
  • After the flood, plates stand here on edge and drip in silence. Hide the next clue: the dish rack. Slot it between two dry plates.
  • Bedside, one drawer. I mind your glasses, your charger and the novel you never finish. Hide the next clue: the nightstand. Lay it in the drawer, or under the lamp.
  • Bottles, cans and yesterday's news all get a second chance here. Hide the next clue: the recycling bin. Tape it to the outside, under the handle.
  • The breeze plays me, and I never learned a second tune. Hide the next clue: the wind chime. Tie it to the lowest chime with string.
  • Drawers of paper in alphabetical order. Tax season knows me well. Hide the next clue: the filing cabinet. Drop it into the first folder of the top drawer.
  • Faces under plastic, page after page, and nobody in here has aged a day. Hide the next clue: the photo album. Stand it in the gutter between the opening pair of pages.
  • Flip me down when the low sun glares. Some of my kind hide a mirror. Hide the next clue: the sun visor. Tuck it behind the visor on the driver's side. The car stays parked at home.
  • I bend my neck over your work and never read a word. Hide the next clue: the desk lamp. Wind it once around the neck, below the hinge, and tape the end.
  • I bite paper and leave a metal stitch behind. Hide the next clue: the stapler. Close the stapler over one corner, with no staple.
  • I breathe out only. Tires love me for it. Hide the next clue: the bike pump. Loop it over the T-handle and pinch it in place with a clothespin.
  • I get drawn every morning and never get framed. Hide the next clue: the shower curtain. Clip it to the last ring on the dry side.
  • I hang by the shower, all sleeves and belt, waiting to be worn for ten minutes. Hide the next clue: the bathrobe. Drop it into a pocket.
  • I have a handle and wheels, and I spend most of the year empty under something. Hide the next clue: the suitcase. Thread it through the handle, or zip it in the outer pouch.
  • I have twelve pages, and you turn one only when a month is spent. Hide the next clue: the wall calendar. Fasten it with a paper clip to the back of the sheet for the month after this one.
  • I open for the sun, not the rain, and stand through the table's middle. Hide the next clue: the patio umbrella. Clip it inside the folded canopy with a clothespin.
  • I stand upright and get shorter with every spill. Hide the next clue: the paper towel holder. Wind the strip between two sheets, three turns in from the loose end.
  • I weigh in on every recipe and hold no opinions. Hide the next clue: the kitchen scale. Slide it under the base.
  • Leaves live here, far from any tree, waiting for hot water. Hide the next clue: the tea tin. Stand the strip upright among the bags so it shows when the tin opens.
  • Lift my lid for rings without fingers and chains that lock nothing. Hide the next clue: the jewelry box. Rest it across the ring slots so it is seen the moment the box opens.
  • Mail carriers read me daily. I am digits on the wall, and I never add up. Hide the next clue: the house number. Stick it to the siding or the post a hand's width beneath the numerals.
  • More holes than a bad alibi. I keep the pasta and lose the water. Hide the next clue: the colander. Turn it upside down over the strip.
  • Named for gloves and home to manuals, napkins and a tire gauge. Hide the next clue: the glovebox. On top of the manual. The car stays parked at home, engine off.
  • No elephant owns this one. It opens at the back and swallows the groceries. Hide the next clue: the car trunk. Lay it just inside the lid. The car stays parked at home, engine off.
  • One drawer holds spent batteries, old keys and every 'I may need it'. Pull. Hide the next clue: the junk drawer. Leave it showing at the front edge, above the clutter.
  • Pointed hat, painted beard, never moves, guards the flowers anyway. Hide the next clue: the garden gnome. Fold it small and set the gnome on top.
  • Pull one of mine and the next stands up to take its place. Hide the next clue: the tissue box. Feed one end into the oval hole so the strip pulls out like a tissue.
  • Set at night, resented at dawn. Tap my top for a little more sleep. Hide the next clue: the alarm clock. Stand it behind the clock, out of sight from the pillow.
  • Small box, blinking lights. Everyone asks for my password; nobody visits. Hide the next clue: the wifi router. Slide it under the box, clear of the cables.
  • Thyme is kept here, yet no clock ticks. Rack your brain. Hide the next clue: the spice rack. Stand it behind the jar at the far end.
  • Two thin arms wave at the rain and rest when the sky clears. Hide the next clue: the windshield wiper. Fold it into a zip bag under the wiper arm on the driver's side. The car stays parked at home.
  • The upper crust lives here, and it loafs all day. Hide the next clue: the bread box. Lay it flat under the loaf.
  • Wet days fill me up. On dry days I hold a lonely cane or nothing. Hide the next clue: the umbrella stand. Drop it inside, rolled up with a rubber band.
  • Zebra comes long after aardvark here, and every word explains itself. Hide the next clue: the dictionary. Mark the page for the word TREASURE with it.

Word puzzles 40

  • Put the vowels back to read the next stop: BR DBTH Hide the next clue: the birdbath. The letters spell BIRDBATH, with every A, E, I, O and U taken out and a gap added. Weigh it down with a pebble on the rim's dry side, sealed in a sandwich bag.
  • Put the vowels back to read the next stop: FLN GCB NT Hide the next clue: the filing cabinet. The letters spell FILING CABINET, with every A, E, I, O and U taken out and the gaps moved. Drop it into the first folder of the top drawer.
  • Put the vowels back to read the next stop: GL VBX Hide the next clue: the glovebox. The letters spell GLOVEBOX, with every A, E, I, O and U taken out and a gap added. On top of the manual. The car stays parked at home, engine off.
  • Put the vowels back to read the next stop: HSN MBR Hide the next clue: the house number. The letters spell HOUSE NUMBER, with every A, E, I, O and U taken out and the gaps moved. Stick it to the siding or the post a hand's width beneath the numerals.
  • Put the vowels back to read the next stop: JN KDRWR Hide the next clue: the junk drawer. The letters spell JUNK DRAWER, with every A, E, I, O and U taken out and the gaps moved. Leave it showing at the front edge, above the clutter.
  • Put the vowels back to read the next stop: JWL RYBX Hide the next clue: the jewelry box. The letters spell JEWELRY BOX, with every A, E, I, O and U taken out and the gaps moved. Rest it across the ring slots so it is seen the moment the box opens.
  • Put the vowels back to read the next stop: KTC HNS CL Hide the next clue: the kitchen scale. The letters spell KITCHEN SCALE, with every A, E, I, O and U taken out and the gaps moved. Slide it under the base.
  • Put the vowels back to read the next stop: KYB WL Hide the next clue: the key bowl. The letters spell KEY BOWL, with every A, E, I, O and U taken out and the gaps moved. Slide the strip beneath the dish so one corner peeks out.
  • Put the vowels back to read the next stop: LR MCLCK Hide the next clue: the alarm clock. The letters spell ALARM CLOCK, with every A, E, I, O and U taken out and the gaps moved. Stand it behind the clock, out of sight from the pillow.
  • Put the vowels back to read the next stop: MBR LLS TND Hide the next clue: the umbrella stand. The letters spell UMBRELLA STAND, with every A, E, I, O and U taken out and the gaps moved. Drop it inside, rolled up with a rubber band.
  • Put the vowels back to read the next stop: NGH TST ND Hide the next clue: the nightstand. The letters spell NIGHTSTAND, with every A, E, I, O and U taken out and gaps added. Lay it in the drawer, or under the lamp.
  • Put the vowels back to read the next stop: PNC LCP Hide the next clue: the pencil cup. The letters spell PENCIL CUP, with every A, E, I, O and U taken out and the gaps moved. Curl it around the inside of the cup.
  • Put the vowels back to read the next stop: PPRT WLH LDR Hide the next clue: the paper towel holder. The letters spell PAPER TOWEL HOLDER, with every A, E, I, O and U taken out and the gaps moved. Wind the strip between two sheets, three turns in from the loose end.
  • Put the vowels back to read the next stop: PTM BRLL Hide the next clue: the patio umbrella. The letters spell PATIO UMBRELLA, with every A, E, I, O and U taken out and the gaps moved. Clip it inside the folded canopy with a clothespin.
  • Put the vowels back to read the next stop: RCY CLN GBN Hide the next clue: the recycling bin. The letters spell RECYCLING BIN, with every A, E, I, O and U taken out and the gaps moved. Tape it to the outside, under the handle.
  • Put the vowels back to read the next stop: SHW RCR TN Hide the next clue: the shower curtain. The letters spell SHOWER CURTAIN, with every A, E, I, O and U taken out and the gaps moved. Clip it to the last ring on the dry side.
  • Put the vowels back to read the next stop: SNV SR Hide the next clue: the sun visor. The letters spell SUN VISOR, with every A, E, I, O and U taken out and the gaps moved. Tuck it behind the visor on the driver's side. The car stays parked at home.
  • Put the vowels back to read the next stop: WFR TR Hide the next clue: the wifi router. The letters spell WIFI ROUTER, with every A, E, I, O and U taken out and the gaps moved. Slide it under the box, clear of the cables.
  • Put the vowels back to read the next stop: WL LCLN DR Hide the next clue: the wall calendar. The letters spell WALL CALENDAR, with every A, E, I, O and U taken out and the gaps moved. Fasten it with a paper clip to the back of the sheet for the month after this one.
  • Put the vowels back to read the next stop: WND SHL DWPR Hide the next clue: the windshield wiper. The letters spell WINDSHIELD WIPER, with every A, E, I, O and U taken out and the gaps moved. Fold it into a zip bag under the wiper arm on the driver's side. The car stays parked at home.
  • Unscramble the next stop: ANT TIE Hide the next clue: the tea tin. The letters spell TEA TIN. Stand the strip upright among the bags so it shows when the tin opens.
  • Unscramble the next stop: ARTY PRINTER Hide the next clue: the printer tray. The letters spell PRINTER TRAY. Feed the strip in face down above the unused sheets, then close the drawer.
  • Unscramble the next stop: BEARD BOX Hide the next clue: the bread box. The letters spell BREAD BOX. Lay it flat under the loaf.
  • Unscramble the next stop: BOB EARTH Hide the next clue: the bathrobe. The letters spell BATHROBE. Drop it into a pocket.
  • Unscramble the next stop: BUMP PIKE Hide the next clue: the bike pump. The letters spell BIKE PUMP. Loop it over the T-handle and pinch it in place with a clothespin.
  • Unscramble the next stop: BUS EXIT SO Hide the next clue: the tissue box. The letters spell TISSUE BOX. Feed one end into the oval hole so the strip pulls out like a tissue.
  • Unscramble the next stop: CAROL DEN Hide the next clue: the colander. The letters spell COLANDER. Turn it upside down over the strip.
  • Unscramble the next stop: CAUSE SIT Hide the next clue: the suitcase. The letters spell SUITCASE. Thread it through the handle, or zip it in the outer pouch.
  • Unscramble the next stop: CHARD SKI Hide the next clue: the dish rack. The letters spell DISH RACK. Slot it between two dry plates.
  • Unscramble the next stop: CHIMED WIN Hide the next clue: the wind chime. The letters spell WIND CHIME. Tie it to the lowest chime with string.
  • Unscramble the next stop: CRISP CAKE Hide the next clue: the spice rack. The letters spell SPICE RACK. Stand it behind the jar at the far end.
  • Unscramble the next stop: DAMP ELKS Hide the next clue: the desk lamp. The letters spell DESK LAMP. Wind it once around the neck, below the hinge, and tape the end.
  • Unscramble the next stop: DANGER GNOME Hide the next clue: the garden gnome. The letters spell GARDEN GNOME. Fold it small and set the gnome on top.
  • Unscramble the next stop: FOOT LOOTS Hide the next clue: the footstool. The letters spell FOOTSTOOL. Tape it underneath, or lift the lid if it has one.
  • Unscramble the next stop: HOT PLUM BOA Hide the next clue: the photo album. The letters spell PHOTO ALBUM. Stand it in the gutter between the opening pair of pages.
  • Unscramble the next stop: INDICATORY Hide the next clue: the dictionary. The letters spell DICTIONARY. Mark the page for the word TREASURE with it.
  • Unscramble the next stop: LOWER TACK Hide the next clue: the towel rack. The letters spell TOWEL RACK. Slip it between the towel and the rail.
  • Unscramble the next stop: PLASTER Hide the next clue: the stapler. The letters spell STAPLER. Close the stapler over one corner, with no staple.
  • Unscramble the next stop: TRUCK RAN Hide the next clue: the car trunk. The letters spell CAR TRUNK. Lay it just inside the lid. The car stays parked at home, engine off.
  • Unscramble the next stop: VOTE MINT Hide the next clue: the oven mitt. The letters spell OVEN MITT. Slide the strip deep inside, past the wrist cuff, so it cannot fall out.

Look-around clues 40

  • At the desk, find the light with a hinge in its neck. Hide the next clue: the desk lamp. Wind it once around the neck, below the hinge, and tape the end.
  • Behind the bathroom or bedroom door, check the pockets of what hangs longest. Hide the next clue: the bathrobe. Drop it into a pocket.
  • Beside the sink, look for the wire frame where clean plates stand upright. Hide the next clue: the dish rack. Slot it between two dry plates.
  • By the bed, find the glowing numbers. The clue stands right behind them. Hide the next clue: the alarm clock. Stand it behind the clock, out of sight from the pillow.
  • By the front door, find the tall holder with a drip tray at the bottom. Hide the next clue: the umbrella stand. Drop it inside, rolled up with a rubber band.
  • Count the rings above the tub. The clue is clipped by the last one. Hide the next clue: the shower curtain. Clip it to the last ring on the dry side.
  • Find the bag with an airline tag still on it. Try its handle, then its outer pouch. Hide the next clue: the suitcase. Thread it through the handle, or zip it in the outer pouch.
  • Find the kitchen thing with a platform on top and a zero on its face. Hide the next clue: the kitchen scale. Slide it under the base.
  • Find the machine with a paper drawer. Pull the drawer, not the plug. Hide the next clue: the printer tray. Feed the strip in face down above the unused sheets, then close the drawer.
  • Find the roll in the kitchen that stands on end or hangs under a cabinet. Hide the next clue: the paper towel holder. Wind the strip between two sheets, three turns in from the loose end.
  • Find the shelf where every jar is the same size and no two smell alike. Hide the next clue: the spice rack. Stand it behind the jar at the far end.
  • Find the tin in the kitchen that holds bags with strings. Hide the next clue: the tea tin. Stand the strip upright among the bags so it shows when the tin opens.
  • Find the wall where this month hangs on a nail. Look behind next month. Hide the next clue: the wall calendar. Fasten it with a paper clip to the back of the sheet for the month after this one.
  • Follow the cable from the wall to the box with the most blinking lights. Hide the next clue: the wifi router. Slide it under the box, clear of the cables.
  • Go where the keys land when someone walks in. Look under the dish. Hide the next clue: the key bowl. Slide the strip beneath the dish so one corner peeks out.
  • In the bathroom, find the rail on the wall. Look behind what is folded over it. Hide the next clue: the towel rack. Slip it between the towel and the rail.
  • In the garage, find the tall tube with a T-handle and a short hose. Hide the next clue: the bike pump. Loop it over the T-handle and pinch it in place with a clothespin.
  • In the living room, find the lowest seat: the one nobody's back ever touches. Hide the next clue: the footstool. Tape it underneath, or lift the lid if it has one.
  • In the parked car, look up from the driver's seat and fold down the flap. Hide the next clue: the sun visor. Tuck it behind the visor on the driver's side. The car stays parked at home.
  • In the yard, find the one bowl that stands on a pedestal. Hide the next clue: the birdbath. Weigh it down with a pebble on the rim's dry side, sealed in a sandwich bag.
  • It hangs on a hook near the stove and fits either hand. Hide the next clue: the oven mitt. Slide the strip deep inside, past the wrist cuff, so it cannot fall out.
  • Look for the bin where the cardboard is flattened and the cans are rinsed. Hide the next clue: the recycling bin. Tape it to the outside, under the handle.
  • Look for the bowl you can see daylight through. Hide the next clue: the colander. Turn it upside down over the strip.
  • Look for the box with an oval hole in the top. Pull what sticks out. Hide the next clue: the tissue box. Feed one end into the oval hole so the strip pulls out like a tissue.
  • Look for the tallest thing in the study whose drawers have label slots. Hide the next clue: the filing cabinet. Drop it into the first folder of the top drawer.
  • On the bookshelf, find the fattest book that tells no story. Hide the next clue: the dictionary. Mark the page for the word TREASURE with it.
  • On the desk, count the pens. The clue is curled inside whatever holds them. Hide the next clue: the pencil cup. Curl it around the inside of the cup.
  • On the desk, find the thing that opens like a jaw. Look in its bite. Hide the next clue: the stapler. Close the stapler over one corner, with no staple.
  • On the dresser, find the small box with a hinge and a mirror inside the lid. Hide the next clue: the jewelry box. Rest it across the ring slots so it is seen the moment the box opens.
  • On the kitchen counter, one box has a door that rolls or lifts. Look inside. Hide the next clue: the bread box. Lay it flat under the loaf.
  • On the parked car's front glass, lift the arm on the driver's side. Hide the next clue: the windshield wiper. Fold it into a zip bag under the wiper arm on the driver's side. The car stays parked at home.
  • On the patio, find the pole that goes through a table. Look where it folds. Hide the next clue: the patio umbrella. Clip it inside the folded canopy with a clothespin.
  • On the shelves, find the thick book with no title and plastic pages. Hide the next clue: the photo album. Stand it in the gutter between the opening pair of pages.
  • Open kitchen drawers until one has no theme at all. That is the one. Hide the next clue: the junk drawer. Leave it showing at the front edge, above the clutter.
  • Sit in the passenger seat of the parked car. What opens toward your knees? Hide the next clue: the glovebox. On top of the manual. The car stays parked at home, engine off.
  • Somewhere in the flower bed, a small figure is staring back at you. Hide the next clue: the garden gnome. Fold it small and set the gnome on top.
  • Stand at the head of the bed and look left or right at knee height. Hide the next clue: the nightstand. Lay it in the drawer, or under the lamp.
  • Stand where a delivery driver would and read the digits. Look just below. Hide the next clue: the house number. Stick it to the siding or the post a hand's width beneath the numerals.
  • Step outside and stand still. Walk toward the first thing you hear ringing. Hide the next clue: the wind chime. Tie it to the lowest chime with string.
  • Walk to the back of the parked car and lift the widest lid it has. Hide the next clue: the car trunk. Lay it just inside the lid. The car stays parked at home, engine off.

Kitchen 8

  • All that puzzling was for this: ____. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • Detective work complete. Collect the reward ____. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • Last stop: no riddle, no trick. Look ____ and be quick. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • The map runs out here. Dig no holes: the treasure is ____. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • No more stops after this one. Your prize is ____. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • One stop remains, and it is ____. Bring everyone. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • X marks no spot in this house. Try ____ instead. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.
  • You cracked every clue on the way. Look ____ for the treasure today. The last strip. Write the treasure's place in the gap by hand, for example behind the sofa cushions or on the top bookshelf.

How this list was compiled: Written for this site by its editors on 2026-10-01: original clues for a treasure trail on the host's own property. Each of 40 stops in a kitchen, a living room and study, a bedroom, bath and hall, and a garage, car and yard has three clues of different kinds: a riddle that never names the stop, a word puzzle (an anagram of the stop's name, or the name with its vowels taken out) and a look-around clue solved by what can be seen there. Eight final clues carry a blank for where the treasure is. Nothing was copied from another clue list. Every anagram was checked by script to use exactly the letters of the stop's name. No stop is a public place, none involves a stranger, and none is a stove, a fireplace, a power tool or a ladder. The four car stops are for a car parked on the host's own driveway or in the garage with the engine off. The note under each clue names the stop and says where the paper strip goes. Riddle, puzzle and look-around are the editors' labels, and the difficulty is their judgment, not a standard. Licence: own work