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Take one of your existing Macros containing a loop and try to print each iteration on a page.
Further processing outside Metview
Of course you can do further processing of plots outside Metview. The page Generating animated GIFs from Metview plots gives you some helpful advice if you want to build animations.
Metview/Magics also supports special tags in SVG for the Inkscape graphical editor. This open source editor is great for when you need to further annotate your maps. Like many modern graphics tools Inkscape uses layers to separate content and Metview will split all components of the maps into them for easier editing.
KML as output format
KML is a very special output format. It contains the it has no notion of output size. KMZ is the compressed version of the KML files and is written by default.You can write out the uncompressed KML if you want to debug the output.
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