Added new dummy nodes in DocTree
Added system commands.
New parser functionality.
Added worksheet command to create worksheets.
Some new documentation.
Added more functionality to worksheets.
Added documentation.
Fixed example enviroment.
Following lines can be obtained by ; without output.
Examples with names are now systems to be included.
Left spaces in Verbatim.
Added possibility to parse makefile commands.
Repaired bugs in example env.
Fixed a space in testfile generation.
Added possibility to add a bibfile.
Fixed typo.
Converts bibfile automatically.
Fixed warning for missing entity.
Repaired global i