first_character

Grammar1: AdabasD V13n

<first_character> ::=
        <letter>
    |   <extended_letter>
    |   <language_specific_character> 

Referenced by:
<simple_identifier>

Grammar2: MaxDB V7_6n

<first_character> ::= 
  <letter> 
| <extended_letter> 
| <language_specific_character>

Referenced by:
<simple_identifier>