Healers have a reduced chance to engrave a given character in the dust correctly, because of the stereotype about doctors having terrible handwriting.

Grimtooth can be used to engrave a special name, similar to Elbereth, that scares only elves and hobbits.

Engraving with a wand of probing should produce the same “You probe beneath the floor” effect that you get when zapping probing at the floor, and should likewise automatically identify the wand.

Add YAFMs:

• Combat messages produced when you attack a hallucinogen-distorted fog cloud are replaced by “You attack thick air.”
• When you try to engrave when engulfed by a dust vortex: “You try to write in the dust, but it won’t stand still!”
• When you get out of an air elemental (that you didn’t kill) while hallucinating: “I don’t think we’re in Kansas anymore.”
• When you attempt to move into a Mordor orc with the m prefix: “You fail to simply walk into the Mordor orc.”
• When a sasquatch is blinded by a camera flash: “Unfortunately, that picture’s probably going to come out blurry.”

Lawfuls get an alignment penalty for writing graffiti with a marker, even if it’s Elbereth or something else useful.

Convicts get an alignment bonus by writing graffiti. (Graffiti has to come from a magic marker, or a felt marker in variants that have it.)

When you engrave with a wand of digging, you engrave it just fine, but you also create and get stuck in a pit on your square.

Engraving with a blade made of softer metals such as gold or silver should dull it faster than an iron blade.

If polymorphed into a strong clawed monster like a dragon, you can make semipermanent engravings with “-“. However, if your form does not have hands, this will be slower than an athame or wand of digging can do.

If you’re being stuck, hugged or grabbed by a monster, you can’t engrave anything.

Athames are a chargeable weapon-tool, or just a tool. Has tinning kit levels of charges and recharging. Once out of charges, it can’t be used to make a semi-permanent engraving anymore.

A role whose main mechanic is engraving and carving different magical runes on the ground.

When polymorphed into a paper golem, you can’t write on the floor with your finger because it would get too dirty.

Vorpal and bisecting weapons don’t get dull when you engrave with them.

If you have slippery fingers, your chance of failing to engraving the text you wanted in the dust is higher.

Engraving should be an occupation rather than weirdly leaving the player paralyzed but still writing until it’s finished. If it is an occupation, the usual interruptions will make the player stop engraving.

You can engrave on walls or doors. Elbereth on walls or doors doesn’t work. You can read it by standing on the nearest space. Random graffiti, if it generates on a floor square next to a wall or door, may say “Something is written on the wall here.” instead of the floor. Graffiti could render as ~ or something similar.

If the player is polymorphed into a red or blue dragon, they can burn-engrave on the floor with their fire/lightning breath.

Engraving with Fire Brand creates a burnt engraving as a wand of fire does (but still degrades the sharpness of the blade).