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Quick answers
When should I pick Open icon systems?
When the story is: slides, product UI, posters, school worksheets.
When should I avoid Open icon systems?
Skip it in cases like: mixing five icon styles on one slide.
Who invented or popularised it?
Feather to Lucide and other ISC/MIT SVG icon families on GitHub
What does it encode?
stroke or fill metaphors at a shared grid and weight
Is it OK in ads?
Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure.
Will a teacher accept it?
Yes for lab reports and poster boards if axes, units and a source line are present.
Open icon systems encodes values as stroke or fill metaphors at a shared grid and weight. Feather to Lucide and other ISC/MIT SVG icon families on GitHub.
In reports, ads and assignments it fits slides, product UI, posters, school worksheets. Skip it when mixing five icon styles on one slide.
Parts
- Mark — The core mark of Open icon systems is stroke or fill metaphors at a shared grid and weight.
- Scale — The scale must show zero (or a declared break) and units.
- Axis — Axis titles name the variable, not a mood.
- Legend — A legend is weaker than a direct label. Write beside the mark when you can.
- Label — Numbers are optional. If comparison is the job, label the ends only.
- Grid — Keep the grid faint. Data should own the ink.
- Annotation — One annotation sentence. Date the source.
- Frame — A thin frame. Never a 3-D box.
Variants
- SVG icon set — Variant 1 of Open icon systems (SVG icon set). Same encoding, different layout.
- UI metaphor pack — Variant 2 of Open icon systems (UI metaphor pack). Same encoding, different layout.
- Lucide kit — Variant 3 of Open icon systems (Lucide kit). Same encoding, different layout.
- Open icon systems 4 — Variant 4 of Open icon systems (Open icon systems 4). Same encoding, different layout.
Labels
- Axis — On Open icon systems, make Mark readable.
- Legend — On Open icon systems, make Scale readable.
- Label — On Open icon systems, make Axis readable.
- Grid — On Open icon systems, make Legend readable.
- Annotation — On Open icon systems, make Label readable.
Open icon systems: honour stroke or fill metaphors at a shared grid and weight, and switch when mixing five icon styles on one slide.