I have multiple label lines in one node, all of which have Bold style. I want just one of the lines to also have italic style. If neccessary that line can be without Bold style. How can I have multiple styles in one label? These lines must be in a single node or appear to be a single node..
If you want to use a single label with bold and (bold) italic text, you will have to use HTML formatting to achieve the desired result. Please see How can I achieve different text stylings within one label? for more information.
Alternatively, you could create multiple labels in one node and use one kind of text styling per label.
Well, there is a paragraph Creating Labels in the yEd manual.
You can add a label to a node by right-clicking said node to open its context menu and choosing "Add Label" from the context menu.Alternatively, SHIFT+F2 will add a new label to the currently selected node (if only one node is selected).