Accessing this property you can read/set the page header for the active sheet. 

The page header has 3 sections, one at the left, one centered and one at the right. 

The left section begins with "&L", the centered section with "&C" and the right section with "&R" 

For example, to write "bye" on the left section and "hello" on the right section, you would assign a string "&Lbye&RHello" to the header. 

You can also insert personalized codes, for example to write the date of printing. Some of them are:

You can easily know what codes you need by studying an existing sheet. Create a sheet on Excel, set the header to whatever you want, and use the code on the first example to read the resulting string.

TFlexCelImport Properties