Make a new query. Drop the following code in the SQL part.
SELECT MSysIMEXSpecs.SpecName, MSysIMEXColumns.FieldName, MSysIMEXColumns.Start, MSysIMEXColumns.Width, MSysIMEXColumns.SkipColumn
FROM MSysIMEXColumns INNER JOIN MSysIMEXSpecs ON MSysIMEXColumns.SpecID = MSysIMEXSpecs.SpecID
ORDER BY MSysIMEXSpecs.SpecName, MSysIMEXColumns.Start, MSysIMEXColumns.Width;
These table are not updatable by you, but will show the Spec, the fields, the start and the width.
I revised the query to show skipped fields and to sort properly.