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A Header contains the names of the columns in the table. Data are not extracted from this part of the table. The header merely helps the program to locate the top boundary of the table body and divide the table into columns. The search constraints for the header are set on the Columns tab.

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Header properties

The header properties are set on the Header tab of the Table element’s Properties dialog box.
Screenshot of the Header tab of the **Table** element's Properties dialog box in ABBYY FlexiLayout Studio, showing the header search and null hypothesis options.
The following properties can be specified for a table header:
  • Look for header – Tells the program whether to look for a header when matching the FlexiLayout. This option is selected by default.
  • Header is optional – Tells the program that the table can have no header. This does not prevent the FlexiLayout from matching. This option is selected by default.
  • Null hypothesis quality – Sets the quality of the null hypothesis for the header. This hypothesis is generated if the header is not found. The default value is 0.95.
  • Number of hypotheses – Sets the maximum number of hypotheses to generate when looking for the header. The default value is 1.
  • Header is on each page – Specifies that the header of a multi-page table occurs on every page. This option is selected by default.
  • Absolute area constraints – Lets you specify the coordinates of the header search area. To enter the coordinates, select this option and, in the field next to it, enter them in the following format: [left, top, right, bottom]. You can enter the coordinates of only one rectangle in this field.