symbols-and-icons SKILL.md skillA
symbols-and-icons from yuiseki/map-from-scratch is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yuiseki/map-from-scratch/symbols-and-icons@git:20261026.79a684ePins git:20261026.79a684e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yuiseki/map-from-scratch
- Path
.agents/skills/symbols-and-icons/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261026.79a684e, committed Oct 26, 2026
- Size
- 27,130 bytes
- Repository stars
- 24
- License
- GPL-3.0
How map engines turn point symbols, icons, shields, markers and fill patterns into pixels (atlases, resolution, SVG rasterising, pixel snapping, batching, depth and globe occlusion, collision with labels, sizes in metres), with what each choice cost them. Load it when a map-from-scratch request draws anything other than plain shapes at a point or along a line (POI icons, pins, route shields, oneway arrows, hatch or pattern fills, 3D models per point), or when icons come out blurry, clipped…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Symbols and icons: rasterise once, place by anchor, draw as one batch A symbol is a small picture tied to a point (or to positions along a line) that must stay a fixed size on screen, stay sharp at any device pixel ratio, appear whole or not at all, not overlap its label or its neighbours, and be drawn thousands of times per frame. General engines must accept any icon set at run time, so they build atlases on the fly, parse SVG, cache rasterised images with eviction rules, and wait for sprites to load. Most of that machinery exists because the icon set is unknown until run time. A renderer made for one request usually knows its icons at bake time, and the decision is mostly which of the engines' problems it can skip. Per-engine detail with the full evidence is in [references/engines.md](references/engines.md); this file is what you need at the moment of choosing. Numbers in brackets refer to Sources at the end. ## What the engines decided ### Where icon pixels come from: an atlas, built once - MapLibre GL JS builds a GlyphAtlas and an ImageAtlas per tile, holding only the glyphs and icons that tile uses, packed with potpack [1]. Since 3.0 it …
Read the whole file at its exact version.
How to install
mdr add yuiseki/map-from-scratch/symbols-and-icons@sha256:5d2338353955d140The line at the top of this page pins the label git:20261026.79a684e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_tdl6345iw3hgsfv4)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 26, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (27130 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
yuiseki/map-from-scratch · 24 stars · license GPL-3.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tdl6345iw3hgsfv4 GET https://markdownregistry.com/api/v1/resolve?ref=yuiseki/map-from-scratch/symbols-and-icons GET https://markdownregistry.com/api/v1/blob/5d2338353955d140295550ef01301d0b414336fcae1841d1368f5df83aed8326
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.