They dont
the dots on the walls are braille so search on web to learn it
The Braille in Mt.Ember says "Everything has meaning Existence has meaning Being alive has meaning Have dreams Use power.". You can translate it yourself using the Braille alphabet provided for you on the walls of the room before the room containing the Ruby.
DotBraille is Regi's language in Ruby, Sapphire and Emerald. By reading them in the walls and de-coding them, you can find Regi's (expect Regigas!).
lily braille lily braille lily braille
Lewis Braille invented braille
Lewis Braille invented braille
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Louis Braille invented the Braille painting.
Braille was devised in 1821 by Louis Braille, a Frenchman.
Louis Braille created Braille, a development of a military system for reading by touch, in the dark.
Braille is names after its inventor, Louis Braille.