### ImageJ 1.41

> The ImageJ website is at rsb.info.nih.gov/ij/, the release notes are at rsb.info.nih.gov/ij/notes.html and the Windows installation notes are at rsb.info.nih.gov/ij/docs/install//windows.html.

#### Contents of ImageJ folder:

> ij.jar
>   This JAR (Java Archive) file is the platform-independent core of ImageJ. It is the only file that needs to be changed to upgrade to a newer version of ImageJ. Use the Plugins>Utilities>Upgrade ImageJ command to download newer versions of this file.
> ImageJ.exe
>   This is the ImageJ launcher for Windows.
> ImageJ.cfg
>   This is the configuration file generated by the installer. If ImageJ ever fails to start, delete this file and the installer will create a new one.
> jre
>   This folder contains the Java 1.6.0_05 runtime environment.
> macros
>   This folder contains example macros. The StartupMacros.txt file in this folder contains macros and macro tools that are automatically installed when ImageJ launches. To run a macro, drag and drop it on the ImageJ window and run it by pressing ctrl-r (Macros>Run Macro).
> plugins
>   This folder contains a small sample of the hundreds of plugins available for ImageJ. The plugins in this folder are installed in the Plugins menu when ImageJ starts.
> luts
>   This folder contains LUTs (LookUp Tables) that are installed at startup in the Image>Lookup Tables menu and in the "Lut" toolbar menu. To open a LUT file, drag and drop it on the ImageJ window.