Moving variables to protected so the can be accessed by daughter classes. Adding environment set positing function
Implementing environment set positing function
Adding examples for new implemented features.
Adding decoration functions for columns and rows. Replacing base class method toStringEnvBegin() in order to implement column aligment and decoration.
Bug Correction. Fixing label to correct brackets.
Implementing columns and row decorations. Adding correct printing of decorations.
Removing debug statement.