a = @ is an open type feature that substitutes the regular alphabetic text by visually related non alphabetic glyphs.

abcdefghijklmnopqrstuvwxyz

the quick brown fox jumps over the lazy dog

download the feature as txt file and generate your own font with it.

@∞(∂€ƒ§#¡;{|µ~•¶¤®∫†˘√"×¥≥

†#€ ¤˘¡({ ∞®•"~ ƒ•× ;˘µ¶∫ •√€® †#€ |@≥¥ ∂•§

∂•"~|•@∂ †#€ ƒ€@†˘®€ @∫ †×† ƒ¡|€ @~∂ §€~€®@†€ ¥•˘® •"~ ƒ•~† "¡†# ¡†.

@∞(∂€ƒ§#¡;{|µ~•¶¤®∫†˘√”×¥≥

†#€ ¤˘¡({ ∞®•”~ ƒ•× ;˘µ¶∫ •√€® †#€ |@≥¥ ∂•§

∂•”~|•@∂ †#€ ƒ€@†˘®€ @∫ †×† ƒ¡|€ @~∂ §€~€®@†€ ¥•˘® •”~ ƒ•~† “¡†# ¡†.

@∞(∂€ƒ§#¡;{|µ~•¶¤®∫†˘√”×¥≥

†#€ ¤˘¡({ ∞®•”~ ƒ•× ;˘µ¶∫ •√€® †#€ |@≥¥ ∂•§

∂•”~|•@∂ †#€ ƒ€@†˘®€ @∫ †×† ƒ¡|€ @~∂ §€~€®@†€ ¥•˘® •”~ ƒ•~† “¡†# ¡†.

@∞(∂€ƒ§#¡;{|µ~•¶¤®∫†˘√”×¥≥

†#€ ¤˘¡({ ∞®•”~ ƒ•× ;˘µ¶∫ •√€® †#€ |@≥¥ ∂•§

∂•”~|•@∂ †#€ ƒ€@†˘®€ @∫ †×† ƒ¡|€ @~∂ §€~€®@†€ ¥•˘® •”~ ƒ•~† “¡†# ¡†.

@∞(∂€ƒ§#¡;{|µ~•¶¤®∫†˘√”×¥≥

†#€ ¤˘¡({ ∞®•”~ ƒ•× ;˘µ¶∫ •√€® †#€ |@≥¥ ∂•§

∂•”~|•@∂ †#€ ƒ€@†˘®€ @∫ †×† ƒ¡|€ @~∂ §€~€®@†€ ¥•˘® •”~ ƒ•~† “¡†# ¡†.