Inspired by Genuary 2025 prompts, #1 - Vertical or horizontal lines only & #2 - Layers upon layers upon layers.

Thus, it is drawn with vertical lines only, using layers for animation:)

Animated by default.
Hit space to pause, "g" to save 5s gif, "h" to save 10s gif, "s" to save png.

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Libraries used: p5js (v1.7)
1.01.2025, flumton (mulf)