There are two file extensions used to store lexer resources: 

*.LCF Single lexer configuration (text Delphi resource of TSyntAnalyzer). 

*.LXL Lexer library (text Delphi resource of TSyntaxManager). 

All this files have "Delphi Form Resource" text format. 

To manage this files use "Syntax Lexer Library" dialog. This dialog has commands: save/load lexer library (*.LXL), import/export single lexer (*.LCF). 

Also to work with lexer's resource files use "Syntax Lexer" dialog, in which there are two buttons to load (Import) and to save (Export) lexer configuration from/to file (*.LCF). 

At run time use LoadFromFile and SaveToFile methods of TSyntaxManager and TSyntAnalyzer to load/save lexer library and lexer configuration from/to file.