This is an archive of the old MediaWiki-based ImageJ wiki. The current website can be found at

Help on Menu Item

The convenient command Help  › Help on Menu Item allows you to open pages on specific menu items:

Error creating thumbnail: Unable to save thumbnail to destination

The mouse cursor will change to an arrow with a question mark and the next menu item on which you click will not execute that command but open the page on this Wiki that corresponds to the selected command.