A GridLayout is very similar to a TableLayout. Here are the differences:
- rowCount and columnCount in GridLayoutProperties explicitly control the number of rows and columns
- each row and column is of uniform height or width, i.e. all Morphs in a row have the same height (that of the tallest Morph in the row), and all Morphs in a column have the same width
Requires the Dynamic Layout Menu package, if you'd like to see grid layout in the menu. May also require Elliptical Layout; haven't tested yet.