...
Metview 4's Text Plotting icon no longer has any legend parameters - these are all now contained in the Legend icon. In addition, the way to specify user text in a title has changed a little. Metview 3 contained options to specify whether a title contained automatic text, user text or both; Metview 4 instead has a default title line which is "<magics_title/>". Any text line with this string will have the automatic title; lines without it will not. Magics++ also has features, still to be fully documented, to automatically add GRIB meta-data to a 'semi-automatic' plot title using GRIB_API keys. For instance, where Metview 3 used !PARAM! Metview 4 would use <grib_info key='name'/>. Another commonly-encountered change is that instead of Text Reference Character Height, Metview now has Text Font Size. In Macro, ptext is replaced by mtext. See Legends, above, for information regarding the mixing of ptext() and mlegend().
Text View, Empty View and Annotation
Metview 3 had an Empty View icon for reserving a blank area of a page. It also had a Text View, into which Annotation icons could be dropped. Metview 4 (from version 4.4 onwards) simplifies these functionalities by introducing a single view, the Annotation View, into which Text Plotting icons can be dropped. An Empty View can be simulated by simply having an Annotation View with nothing in it. This means that the Empty View, Text View and Annotation icons from Metview 3 are no longer supported.
Curve Plotting
This is perhaps the area which has experienced the greatest change. Curve plotting is now achieved via one of the Visualiser icons. The Curve View is replaced by the more general-purpose Cartesian View. There is a Macro example which shows, side by side, Metview 3 and 4 code for plotting curves - Migration: Curve Plotting.
...
These icons are currently restricted to returning a single frame (Metview 3 could, for instance, return a set of cross sections if there were multiple parameters or times in the input data). This feature is in the process of being implemented, and further documentation is available specifically for the 4.4 release of Metview, which contains further small revisions to the interface. See New Cross Section, Average and , Vertical Profile and Hovmoeller modules in Metview 4.4.
Display Window Contents
The Display Window's Contents drawer was an advanced feature which enabled the quick fine-tuning of a plot. This feature is not currently enabled in Metview 4, although it is planned to be in the future.
...