Hi there!

..regarding 1.

Parallel view:
script:var vp = moi.ui.mainWindow.viewpanel.getViewport('3D'); vp.projection = 'Parallel';

Perspective view:
script:var vp = moi.ui.mainWindow.viewpanel.getViewport('3D'); vp.projection = 'Perspective';

Toggle Perspective / Parallel:
script:var vp = moi.ui.mainWindow.viewpanel.getViewport('3D'); vp.projection = (vp.projection == 'Perspective' ? 'Parallel': 'Perspective');


~ Marco