People use special signs to write. 

People use special signs to write. 

The Tamil script is a way to write the Tamil language. 

This script is made of two main parts. The 12 vowels are called "soul" letters. The 18 consonants are called "body" letters. When they join, they make a living letter. You write the script from left to right.
Long ago, people wrote on palm leaves. They used a tool called a stylus. They had to be very careful. If they poked a hole, the leaf might tear. This changed how the letters looked. The shapes became more rounded over time. 
In the 1900s, people made new rules. They made the markers easier to use. This helped with printing books. Today, the script is still very important. It helps people share their stories and culture.
The Tamil script is a beautiful way to write the Tamil language. 

Learning how the letters work is like seeing a body and a soul join. The 12 vowels are called "soul" letters or uyir. The 18 consonants are called "body" letters or mei. When a vowel and a consonant join, they create a "living" letter. These are called uyir mei letters. 
The history of this writing is very old. It likely evolved from the original Brahmi script. The earliest examples of Tamil writing come from the Ashokan period. People used a version called Tamil-Brahmi or Tamili script. 
Writing tools changed how the letters looked over time. For a long time, people wrote on palm leaves. They used a sharp tool called a stylus to make marks. Scribes had to be very careful with their hands. If they poked a hole, the leaf could tear or decay. This led to fewer sharp marks and more rounded shapes. Some special marks, like the puḷḷi, became rare for a while. The puḷḷi is used to stop a vowel sound. It did not fully return until the time of printing.
Today, the Tamil script is used in many modern ways. In the 19th century, some letter shapes were simplified for printing. The 20th century brought even more reforms to make it easier. These changes helped make the vowel markers more regular. 
The Tamil script is an abugida used to write the Tamil language. 

The mechanics of the script rely on a unique relationship between sounds. There are 12 vowels, which are called "soul-letters" or uyir. There are 18 consonants, known as "body-letters" or mei. When a consonant and a vowel join, they form a compound letter. These are called "living" or "embodied" letters, or uyir mei. 
Consonants are organized into three distinct groups based on how they are spoken. The first group is vallinam, which are hard consonants. The second group is mellinam, which are soft consonants. This group includes all the nasal sounds. The third group is itayinam, or medium consonants. There are six specific nasal consonants in Tamil. These include velar, palatal, retroflex, dental, bilabial, and alveolar nasals. Traditional grammarians used these categories to define the nature of the letters. The Tolkāppiyam, an ancient grammar, describes the lexical rules for these letters. For example, certain consonants cannot begin or end a word.
The history of the script traces back to the Brahmi script. 
Writing materials played a major role in how the script changed. 
The Tamil script is unique among other Brahmi-derived scripts. It does not regularly represent voiced or aspirated stop consonants. This is because those sounds are not phonemes in the Tamil language. For example, the character "k" can represent different sounds based on phonology. The script also rarely uses typographic ligatures for conjunct consonants. When they do occur, such as kṣa or śrī, they follow specific rules. In most cases, a writer uses the puḷḷi to separate two consonants. This makes the script look different from other Indian writing systems.
Today, the script connects to modern global standards. The ISO 15919 is an international standard for transliterating Tamil into Latin characters. It uses diacritics to map the many Brahmic sounds to the Latin alphabet. 
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