PUBLIC MARKS with tags xsl & lang:en

xsl elements

xsl w3c reference

With every programming language I have worked in it has become normal practice, after having developed an initial series of programs, to identify a common structure to which all subsequent programs should be built. This may take some time as it involves a bit of trial and error in playing with the different ways in which a task can be achieved in order to find the methodology that gives the most advantages in the long term.