About layout part types
Title header: Appears only once at the top of the first screen or page and replaces the normal header (if one is specified). In reports, can be used to print a separate title page. You can have only one title header in a layout.
Header: Appears at the top of every screen or page (unless you add a title header, which supersedes the header on the first page). Use for titles or column headings (in columnar reports). You can have only one header in a layout.
To include summary data on a layout (for example, subtotals, grand totals, averages, counts, and so on), you place summary fields in summary layout parts. Summary parts include grand summary and subsummary parts.
A subsummary part usually contains one or more summary fields that display “subsummary” information (like subtotals) for a subset of records. The records are grouped (sorted) by values in another field, the break field. Whenever the value of the break field changes, the report “breaks” and FileMaker Pro inserts the subsummary part.
Grand summary (leading or trailing): When you place a summary field in this part, the summary field displays summary information for all records in the found set. The grand summary part can be at the beginning (leading) or end (trailing) of the report, depending on its placement on the layout. You can have only one leading grand summary and one trailing grand summary in a layout.
If you put another type of field in this part, FileMaker Pro displays data from the first record (leading) or last record (trailing) being browsed.
Subsummary (leading or trailing): When you place a summary field in this part, the summary field displays “subsummary” information for each subset of records sorted by the specified break field. The subsummary part can be before or after the body part, depending on the placement on the layout. You can have multiple subsummary parts in a layout.
If you put another type of field here, FileMaker Pro displays data from the first record (leading) or last record (trailing) in the group. Put the break field here to identify what subset of records the summary is for.
For example, to summarize each salesperson's sales figures in a database recording sales transactions, define a summary field totaling the Sales field, and then create a subsummary part and place that summary field in it (the break field is the salesperson's name). If you also want a count of that salesperson's transactions, create a second summary field counting the transactions, and also place it on the same subsummary part. To get a grand total of all transactions, place the sales summary field in a grand summary part.
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If a break field is placed in a subsummary part, it will always appear in the left-most column in Table View. Break fields appear at the bottom of leading parts or the top of trailing parts.
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FileMaker Pro automatically adds field labels (such as Total) to subsummary parts to identify the data displayed.
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