Nu - ν Tau - τOmicron - ο Upsilon - υPi - π Xi - ξRho - ρ Psi - ψSigma - σ Zeta - ζIn addition to these functions, dots 4 & 6 can also be used to indicate italics of a letter.
For example small italic letter ‘a’ is written as
Base code11 : Dots 4 and 5 - Mirror image of letter (b)
Superscript Indicator ( )
In mathematics, subscripts and superscripts are often used. For example, in writing a^2 ,
there should be an indication that the 2 is a superscript. In visual form, it is clear as the
position of 2 itself is different from the baseline. In writing this in Braille, there should be
an indication that the 2 following ‘a’ is above the baseline and therefore, there is a need
for an indicator. This indicator is indicated by the dots 4 & 5. Please see that the dots
4 & 5 literally appear in the upper portion of the Braille cell. We normally call dots 1,2,4
and 5 as upper cell and dots 2,3,5 & 6 as lower cell. Please see that dots 4 & 5 appear in
the upper cell and therefore, denote the superscript indicator. Therefore, a^2 is written in
Braille as follows:
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