grammar

document ::= header fulltext?

header ::= '___header___' statement_list
statement_list ::= empty | statement*
statement ::= constant ':' definition
definition ::= options (file_assignment | value (LPAREN statement_list RPAREN)?)
options ::= ( language mark? | mark language? )?

language ::= 'lang' value
mark ::= 'mark' value
file_assignment ::= 'file' value 


value ::= '"' VALUE '"'
LPAREN ::= '('
RPAREN ::= ')'
EOF ::= 'end of file'
comment ::= '//*' 'any character'* '*//' 

definition_value ::= (SHORTNAME ('(' LONGNAME ')')?)+
file_value ::= assignment statement_list EOF
mark_value ::= [0-9]+

placeholder ::= '{}'
escape ::= '\'
end_of_line ::= 'EOL'
tab ::= 'TAB'
/* add other spaces */

fulltext ::= '___text___' text
text ::= (sentence|expandable)*
sentence ::= 'any character'*
expandable ::= CONSTANT SPACE (text CLOSING_TAG)+
/* constant ::= long names can be separated by a dot */