| TuneUp Utilities Logon Screen Format | |
| TuneUp Corporation | |
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File with .TLS extension contains background image file, fonts and button icons used by Windows logon screen. This file can be edited using Tune Styler utility.
Tune Styler is a TuneUp Utilities tool suite which is used to apply custom settings to Windows user interface. TLS file overrides default Windows startup screen with custom logon screen when applied.
Windows
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