UML model and stereotypes as icons
Someone will ask: why all this? The thing is that managing presentation graphics (model consistency, tracing, etc.) is practically impossible: any change requires interference with block diagrams and laborious reinsertion into the analysis report (I wrote about this in an article about CASE tools). Such graphics are not transferable between tools other than as uneditable bitmaps. However, if someone feels that block diagrams expressed in more ‘friendly’ symbols add value to the project, they can do so. The UML provides for this and many tools allow it (I used Visual-Paradigm).
Source: UML model and stereotypes as icons – Jarosław Żeliński IT-Consulting.