We have just uploaded a first beta of AM-Notebook 5.2.0. One of the new features (PRO edition only) is a new note type to paint diagrams and flowcharts as the following screenshot shows.
Even if you have never used a similar drawing tool before, it is very easy to create flowcharts and diagrams. AM-Notebook contains many pre-defined objects and symbols that can be inserted and connected with lines. If you move objects around, the relationships between these objects are remembered.
Another major change is full Unicode support in all program modules, also the spreadsheet has got several improvements and enhancements. The download with a complete list of changes can be found in the Beta section.

I’m one of those who “have never used a similar drawing tool before” and would really like to see a tutorial when AM-Notebook is out of beta.
Thanks for constantly improving the program!