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1. The keyboard has the twelve vowels � to ��, the aaytham, the eighteen pure Tamil consonants combined with the first vowel �, 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 � as a consonant symbol. |
2. A consonant symbol followed by
the pulli produces a pure consonant, e.g �+( �����) -> � |
3. A consonant symbol followed by
a vowel other than the first vowel �, produces a vowelised
consonant. e.g. � + � > � �+� > � � +�>�� |
4. A consonant symbol followed by
the same consonant symbol automatically puts a pulli for the
first consonant symbol e.g.� + � > �� |
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. e.g. � + � + � > ��� � + � + � + � > ���� |
6. When the first vowel �
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 � works as
the delinking symbol. e.g. � + � + �->� � � + � + � ->�� � + � + � + � ->��� |
7. The same behaviour is also seen
when a soft consonant symbol is followed by the corresponding
hard consonant symbol.(�,�), (�,�),(�,�),(�,�),(�,�),(�,�)
are the soft and hard consonants pairs e.g. � + � -> �� � + � + � -> � � � � + � + � + � -> ���� � + � + � -> �� � + � + � + � -> ��� |
8. A vowel after anything other than
a consonant symbol remains a vowel e.g � + � -> �� � + � + � -> � � (ެ����) + � -> (ެ����)� # + � -> #� |
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 |
12. The treatment of delete and backspace keys is left to the individual developers. |
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