The main difference between the variants is the number of options available on the "View..." DropDown Menu.
MC Ultra, MC Ultra II, III and IV
MC Ultra has 6 options:-
Biography - Displays the contents from the Biography field/tag
Comments - Displays the contents from the Comment field/tag
Lyrics in 1 Column with Vertical Scrollbar - displays the Centred Lyrics in 1 Column.
Lyrics in 2 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 2 Columns.
Lyrics in 3 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 3 Columns.
Notes - Displays the contents from the Notes field/tag
If you don't already have a Biography field/tag in your MC Library and wish to implement one then, since it is normally used to hold the "Artists Biography", I recommend that you set it up with an Edit Type of String, Relational store one value for each artist and an Edit Type of Large Value.
MC Ultra II has 7 options:-
Biography - Displays the contents from the Biography field/tag
Comments - Displays the contents from the Comment field/tag
Lyrics in 1 Column with Vertical Scrollbar - displays the Centred Lyrics in 1 Column.
Lyrics in 2 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 2 Columns.
Lyrics in 3 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 3 Columns.
Notes - Displays the contents from the Notes field/tag
Track + Album Info - A combination of the Track + Info page from the ET Ultimate Series of trackinfo plugins and the File Info and Played Info panels from CSS Dream
MC Ultra III has 9 options:-
Biography - Displays the contents from the Biography field/tag
Comments - Displays the contents from the Comment field/tag
Lyrics in 1 Column with Vertical Scrollbar - displays the Centred Lyrics in 1 Column.
Lyrics in 2 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 2 Columns.
Lyrics in 3 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 3 Columns.
Notes - Displays the contents from the Notes field/tag
Tags - Modern Tag Window - Displays the contents of all the fields/tags that are visible in the Modern Tag Window
Tags - Legacy Tag Window - Displays the contents of all the the fields/tags that are visible in the Legacy Tag Window
Track + Album Info - A combination of the Track + Info page from the ET Ultimate Series of trackinfo plugins and the File Info and Played Info panels from CSS Dream
MC Ultra IV has 11 options:-
Biography - Displays the contents from the Biography field/tag
Comments - Displays the contents from the Comment field/tag
Lyrics in 1 Column with Vertical Scrollbar - displays the Centred Lyrics in 1 Column.
Lyrics in 2 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 2 Columns.
Lyrics in 3 Columns with Horizontal Scrollbar - displays the Centred Lyrics in 3 Columns.
Notes - Displays the contents from the Notes field/tag
Tags - Modern Tag Window - Displays the contents of all the fields/tags that are visible in the Modern Tag Window
Tags - Modern Tag Window - Tags with Values - Only displays those fields/tags and content that are visible in the Modern Tag Window that have content
Tags - Legacy Tag Window - Displays the contents of all the the fields/tags that are visible in the Legacy Tag Window
Tags - Legacy Tag Window - Tags with Values - Only displays those fields/tags and content that are visible in the Legacy Tag Window that have content
Track + Album Info - A combination of the Track + Info page from the ET Ultimate Series of trackinfo plugins and the File Info and Played Info panels from CSS Dream
MC Ultra IIC, IIIC and IVC
Unlike MC Ultra, MC Ultra II, III & IV, which have the "Lyrics in 2 Columns with Horizontal Scrollbar" as the default "View...", MC Ultra IIC, IIIC and IVC all have the "Track + Album Info" as the default "View...".
They have the same options on the "View..." DropDown Menu as MC Ultra II, III or IV
However the Biography option is relabeled as "Artists Biography" to make it more obvious that "Biography" is a Relational Field tied to the Artist field/tag
Plus an additional option:- Composers Biography - Displays the contents from the Composers Biography field/tag
If you don't already have a Composers Biography field/tag in your MC Library and wish to implement one I recommend that you set it up with an Edit Type of String, Relational store one value for each composer and an Edit Type of Large Value.