The Header is the top row of the table that usually contains the names or descriptors of the columns.
As you mark your table in PDF2XL, the application will attempt to detect if your data has a header and mark it as such with a darker orange colour than the rest of the table.
Resizing a Header
Sometimes, PDF2XL might not be able to detect the header perfectly. For example, if the header contains several lines or if the first lines of the table resemble the header.
If your marked header does not properly encompass the header row, you can easily resize it.
Place your cursor over the marked header's bottom border. The cursor should change into a double-headed arrow.
Press and hold the left mouse button.
Drag the cursor up or down to move the border up or down.
When you've moved the border to the correct position, release the left mouse button.
Renaming Column Headers
In some cases you might want the converted document to display a different header from the one that appears in the original document.
Select the column with the header you want to change.
Select 'Edit Column Header' from the menu that pops up.
In the dialog that appears, enter the name you'd like to give this column.
This also works in tables that don't actually have headers, allowing you to give your own headers to every column.
Adding or Removing the Column Headers
In some cases PDF2XL might not realize that a table has headers, or think that it has headers when it really doesn't. In those cases, you can activate or disable the ' Use Table Header' option from the Content tab.
Even if you've disabled the option and the table now has no headers, you can still create headers in the converted document by renaming headers as described in the previous section.