Annexure - II


 1. The keyboard has the twelve vowels Ü to å÷, the aaytham, the eighteen pure Tamil consonants combined with the first vowel Ü, the five grandha consonants combined with the vowel a (sa,sha,ja,ha and ksha), and the letter shri. The pulli which symbolizes a pure consonant is provided as a separate key (lower case f).Let us call a consonant combined with the vowel Ü as a consonant symbol.
 2. A consonant symbol followed by the pulli produces a pure consonant,
e.g è+( ¹÷¢÷¤) -> è¢
 3. A consonant symbol followed by a vowel other than the first vowel à,produces a vowelised consonant.
e.g. ñ + Ý > ñ£
î+Þ > î¤
è + æ > «è£
 4. A consonant symbol followed by the same consonant symbol automatically puts a pulli for the first consonant symbol
e.g.è + è > è¢è
 5. After putting a pulli automatically, this feature of automatic putting of pulli will be disabled temporarily for one stroke. That is, when the same consonant symbol is typed three times continuously one after another, then the first consonants symbol alone gets the pulli automatically, and the second consonant symbol does not get a pulli, since when the third consonant symbol is typed the automatic pulli feature is temporarily disabled. This feature will be restored immediately
after that.
è + è + è > è¢èè
è + è + è + è > è¢è¢è¢è
 6. When the first vowel à is typed after a consonant symbol, it simply confirms that the previous stroke is an akarameria uirmei. This disables temporarily the combining of any other stroke with the previous stroke. Hence typing any vowel will not join with the previous consonant symbol. Similarly the automatic pulli feature will also be disabled just for the next stroke. This automatic pulli feature gets restored immediately after the next stroke. The Vowel à works as the delinking
è + Ü + Þ->è Þ
è + Ü + è ->èè
è + Ü + è + è ->èè¢è
 7. The same behaviour is also seen when a soft consonant symbol is followed by the corresponding hard consonant symbol.(é,è), (ë,ê),(ï,î),(í,ì),(ñ,ð),(ù,ø) are the soft and hard consonants pairs
é + è -> é¢è
ï + î + î -> ï¢ î î
. ï + î + î + î -> ï¢îî¢î
ï + Ü + î -> ïî
ï + Ü + î + î -> ïî¢î
 8. A vowel after anything other than a consonant symbol remains a vowel
Ý + Þ -> ÝÞ
ð + Ý + Þ -> ð£ Þ
(Þ¬ìªõ÷¤) + à -> (Þ¬ìªõ÷¤)à
# + Ü -> #Ü
 9. The glyphs like kombu etc., which work as a vowel modifiers, can be got by typing the caret sign first and then the corresponding vowel. The caret sign can be got by typing it twice.
 10. The special symbols for bullet and copyright are made available in the proposed font schemes. They can be got as follows. The bullet can be got by typing the caret sign and the full stop. The copyright sign can be got by typing the caret sign followed by the letter c.

 11. To obtain single and double quote the following sequence may be used.

Caret + 7 -> Left single quote
Caret + 8 -> Right Single Quote
Caret + 9 ->Left double quote
Caret + 0 -> Right double quote
Caret + S -> Non breaking space

 12. The treatment of delete and backspace keys is left to the individual developers.

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