Serial number of the first adjusted level on the
axis.
levelName1, levelName2, ...
Level description.
Description
The function sets the descriptions for levels of the
digital axis
defined by the parameter axisNr. The first adjusted level is defined
by its serial number
firstLevelNr -
dig. axis level.
The number of adjusted levels (descriptions) is given by the number of
descriptions (the number of defined parameters levelName...) defined
in the function. Their number is within the interval 1 ... 10.