This zip files contains four files:
install.txt
license.txt
xxxA.dll
xxxU.dll

Please read the license.txt before proceeding.

Two versions of the the same plugin are includende:
xxxA.dll is an ASCII version of the plugin to be used with the older ASCII versions of NotePad++, 
xxxU.dll is an Unicode version of the same plugin to be used with the new Unicode versions of NotePad++.

Only one of the two DLL should be copied in the plugin folder and used at a given time depending on the version of NotePad++ you are using.

If only one DLL is provided, it is a Unicode version.