Info Tip
The Info Tip page in the file type editor lets you define what is shown on 
the info tip (the popup tooltip) that's displayed when the mouse hovers over 
files of this type.
When Opus looks for an info tip to display for a file, it checks file types 
in the following order:
  - The specific file type for that file (e.g. for a .jpg 
  file this might be the JPEG Image file type) 
  
 - The file type group that contains that file extension (e.g. 
  Images) 
  
 - The Recognized images file type if the file is a 
  recognized image file 
  
 - The All files file type (or for a folder, All 
  folders) 
  
 - The All files and folders file type. 
 
 
The first, most specific, info tip found is the one used. So if you want to 
assign an info tip to all members of a group you can edit the file type group 
definition, and then override it on a per file-type basis if 
needed.
 
 
The info tip definition (the image above illustrates the default info tip 
for the Images group) uses various {..} 
codes to insert information about the 
file into the info tip. Each line in the edit field corresponds to a line in the 
info tip. If a line in the definition uses a code that isn't valid for the 
specified file (for example, a .bmp file doesn't support EXIF 
metadata in it, and so fields like {cameramake} would be 
empty), the whole line is omitted from the info tip. You can have multiple codes 
on the one line and in that case, the line is only omitted if all codes on the 
line are empty.
 
     
You can see that for the .jpg file in the above 
screenshot, all the EXIF information defined in the info tip is shown, but the 
info tip for the .bmp file simply displays the top line 
({desc} produces the 800 x 599 x 24 Bitmap Image 
description and {thumbnail} displays the image's 
thumbnail).
 
The keywords used in info tips are the same as used by the Rename function when renaming files using 
metadata, and the Set 
command when adding and removing columns to the file display. See the 
Keywords for 
Columns page for a full list of supported keywords. There are several 
special keywords that are specific to the info tip definition:
  - {foldersize}: This code applies to the info tips for 
  folders, and its use will cause Opus to calculate the total size of the folder 
  when its info tip is displayed. This lets you display the size of a folder by 
  simply hovering over it. You can add the noprefix keyword to 
  suppress the default Size: prefix (for example, 
  {foldersize:noprefix}).
  
   - {foldercontents}: This code also applies to folders; it 
  will result in Opus displaying the names of the first few files and 
  sub-folders contained in the folder. You can control the output with these 
  keywords:
  
    - files and dirs: By default, both files 
    and folders are shown. You can use the files and 
    dirs keywords to limit the contents to just one or the 
    other.
For example: {foldercontents:files}
  
     - noprefix: By default, 
    "Folders:" and "Files:" 
    prefixes are added before each list, respectively. You can use the 
    noprefix keyword to suppress this.
For example: 
    {foldercontents:files,noprefix}
  
     - singleline: By default, each file or folder is 
    displayed on a separate line for easy reading. You can use the 
    singleline keyword to compact everything into a single line 
    (one line for folders, another for files).
For example: 
    {foldercontents:files:singleline}
  
     - indent: In multi-line mode, each line begins with 
    "    " (four spaces) by 
    default. In single-line mode, each item is separated by ", 
    ". You can use the indent keyword to change 
    both of these. The indent keyword must be the last 
    parameter, since it uses everything up to the end of the string.
For 
    example: {foldercontents:indent=--> } or 
    {foldercontents:singleline,indent= :: }
  
     - maxitems: To limit the maximum total number of items 
    (files and folders, combined), use the maxitems keyword. 
    Where a single {foldercontents} tag lists both files and 
    folders, the limit applies to the count of both together, not to each 
    category individually. The default maximum is 10 items in total (files and 
    folders). Note that there is a hard maximum of 20 items in each 
    category (files or folders) and thus a hard maximum of 40 items in 
    total. When there are more items than the maximum, the list or lists will be 
    truncated with "...".
For example: 
    {foldercontents:files,maxitems=20}
  
     - maxitemlength: To limit the maximum length of each 
    individual item, use the maxitemlength keyword. Note that 
    there is a hard maximum of 260 characters, and a default limit of 40 
    characters. When a name is too long, it will be truncated with 
    "...".
For example: 
    {foldercontents:maxitemlength=20}
   
   - {thumbnail}: This code displays the thumbnail for the 
  file if Opus is able to generate one. You can configure how the thumbnail is 
  displayed by appending a border style value to the code: 
  
  
    - {thumbnail:0} displays the thumbnail with no border 
    (frame) 
    
 - {thumbnail:1} displays the thumbnail with a normal 
    border (this is the default if no value is given) 
    
 - {thumbnail:2} displays a border if the thumbnail does 
    not have an alpha channel. For 32 bit images with an alpha channel 
    (transparency) no border is shown. 
    
 - {thumbnail:3} displays no border for folders, but 
    normal borders for files
   
Additionally, you can configure 
  the size of the thumbnail. By default thumbnails will appear the same size in 
  the info tip as they do in the file display, but you can append a size value 
  to the code to specify a different size. Note that the border style value must 
  also be provided if you want to provide the size. For example,
  
    - {thumbnail:1:512} displays the thumbnail with normal 
    border and 512 pixels in size (the image will be scaled to preserve the 
    correct aspect ratio) 
    
 - {thumbnail:0:64} displays the thumbnail with no border, 
    64 pixels in size 
   
   - {infotip}: This code causes Opus to display the standard, 
  system info tip for the file (if there is one). This would be the text that is 
  shown in the tooltip in Explorer when you hover over the file. The main use 
  for this is to display information from third-party tooltip shell 
  extensions that you may have installed. 
 
 
Any text you enter into the info tip definition that isn't a 
{..} code is displayed as-is (unless it appears on a line that 
uses a non-applicable {..} code, in which case the whole line 
is omitted as described above). You can also use some simple HTML-style markup 
codes to control font styles in the info tip:
  - <#RRGGBB>...</#>: This sets the text color 
  for text between the tags. The color is given in hexadecimal, 
  e.g. <#32CD32>Hello!</#> would display the text 
  Hello! in lime green. 
  
 - <b>..</b>: This displays text between the 
  tags in bold. 
  
 - <i>..</i>: This displays the text between the 
  tags in italics. 
  
 - <u>..</u>: This underlines the text between 
  the tags. 
 
 
At the bottom of the info tip page are several buttons:
  - Insert Field: This displays a drop-down list of all the 
  information fields (arranged by category) that you can use in info tips. This 
  list is also automatically displayed in a pop-up menu when you press the 
  { key in the info tip definition field. So don't worry, you 
  don't have to memorise all of the codes! 
  
 - Samples: This lets you access several sample info tip 
  definitions for reference (the samples are the defaults for the various 
  default file type groups plus generic info tips for other files and 
  folders). 
  
 - Clear: Clears the info tip definition completely. 
  
 - Never show an InfoTip for this File Type: If this option 
  is on, the info tip field will be disabled and Opus will be prevented from 
  ever showing an info tip for this type of file (hovering over the file will do 
  nothing).