Files with lcl file extension were found as localization files and used to translate software.
LCL file extension - Localization data
What is lcl file? How to open lcl files?
File type specification:
The LCL file extension was sometimes used for localization files with data for different foreign language translations.
QIP instant messenger has used this kind of file for software localization.
This lcl file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.