Links in diagrams behave like lines: it is possible to modify their shape, appearance, etc. Links are obviously attached to the objects that they connect.

For certain links, text zones can be displayed (for example, for cardinalities). It is possible to modify the position of the text with respect to the line by selecting the text zone and dragging it along the line. Possible movements are necessarily limited so that the text remains attached to the link. This function allows the text to be positioned above, below or on the line.