If you are using a MasterDetailBlock, if you try to create content for an IDetailsPage setting the marginHeight on a Section to anything other than zero, the content of the whole section will be displayed incorrectly. e.g.
public void createContents(Composite parent) {
TableWrapLayout layout = new TableWrapLayout();
layout.topMargin = 5;
layout.leftMargin = 5;
layout.rightMargin = 2;
layout.bottomMargin = 2;
parent.setLayout(layout);
FormToolkit toolkit = _managedForm.getToolkit();
Section section = toolkit.createSection(parent, Section.DESCRIPTION);
toolkit.paintBordersFor(section);
section.marginWidth = 10;
section.marginHeight = 5; // don't try to do this
section.setText("Lookup Types");
section.setDescription("Some description...");
...
Also, if you do not set the layout on the parent of a details page, the details won't show up at all.
