You will find an answer to many of your questions in the Q&A section of the Support Forum.
Visit the Tekla BIMsight Help Center or use the Search function to find what you are looking for.
If you have problems accessing the site content, send us feedback by filling in this form
You can remove unnecessary notes. You can only remove notes that you have created. The creator of the project can remove notes added by other users.
To remove a note:
Go to the Notes tab and double-click the note that you want to remove.
Right-click a note symbol in the model view and click a note symbol in the pop-up menu.
The note opens in a separate tab.
Copyright © 2012 Tekla Corporation. 
Support Forum