The Header section is used to construct the 'high-level' information (such as a planting Mix Name &/or perhaps the overall area of the Mix). In the example above, the expression %name% would result in the name of planting mix being displayed e.g.
Users are able to select from a prebuilt list of available expressions and free text combinations using the associate pop-down list...
Users are able to modify the pop-down list using the 
button to the side
of the Header section. An editable list box is displayed showing the
pre-defined syntaxes, which users are able to manually edit as required. In
the example below, a new syntax has been added 'Mix Name: %name%'. Picking
'Save' will add the new sytax to the pop-down list.
Selecting the new 'Header' syntax 'Mix Name: %name%' would result in the following label...
The Header section can also be used for non-Planting Mix labels. perhaps to record the associated area or length of the associated planting label.
In the example above, the associated Header syntax has been set to (%area%%measurementtype%) where...