Client Menu Reference : The View Menu : Preview/Thumbnail Sizes
   
Preview/Thumbnail Sizes
Opens a submenu to select the size of thumbnails or previews.
Small
Displays records as small thumbnails/previews (default 64 x 64 pixel). You can change the default size. (See “User Settings”, for details.)
Medium
Displays records as medium thumbnails (default 128 x 128 pixel). You can change the default size. (See “User Settings”, for details.)
Large Thumbnail/Preview
Displays records as large thumbnails (default 256 x 256 pixel)/previews. You can change the default size. (See “User Settings”, for details.)