.XLR File Extension
File TypeWorks Spreadsheet
This file is saved in a binary format, which requires a specific program to read its contents.
Spreadsheet or chart created with versions 6-9 of Microsoft Works, a popular productivity suite; stores data in cells that are organized in a grid consisting of rows and columns.
Works is the entry-level productivity suite developed by Microsoft. It contains similar programs to Microsoft Office, but with limited features.
NOTE: XLR files created with Works 8 or later are also recognized by Microsoft Excel.