[export] add "Normseiten" export

[TorstenDittmann]

The "Normseite" is an auxiliary variable with which the size of a manuscript can be estimated. In literature, journalism and advertising, it serves as a possible basis for calculating the fees of authors, journalists, copywriters, translators or editors.

It was originally laid down in the standard contract of 1 July 1992 between the German book trade and the Association of German Writers: 30 lines of maximum 60 characters per page (1500 characters per page).

German Wikipedia

This can be especially useful to share your work with contractors or third parties.