The insertion of merge fields is barbaric, you have to add all fields on a
single line and then format the content, or close out of the popup window
after each insertion so you can add the field and formatting at the same
time.

I like the check box beside each record to select records that do not fit a
query.

Your tutorial on Mail Merge has a spreadsheet with both first and last name
in the same column of an Excel spreadsheet. You suggest to split the data,
but use an antiquated method. Instead of adding a column and cutting and
pasting each last name individually, why not use the features of the product.
Click on data-text to columns, choose delimited length and space as a
seperator and the data is split quickly.