Currently a border can only be drawn around a node including all its sub-nodes. Sometime however I would like to leave out some sub-nodes and only draw the border around e.g. 3 of 5 sub-nodes. This is not possible in MindManager at the moment.
XMind supports this feature.
I do think XMind deals with this a lot better than MindManager. XMind for example has the ability to put around only some of a topic's sub-topics provided they are contiguous, as in this example:
Even better XMind allows the user to overlap boundaries, mixing the colours to reflect the shared areas. The following example actually has only two defined boundaries, yellow and red, but the overlapping area has been shaded orange:
There are several potential uses for such a feature. For example it can be used to highlight groups of topics which meet certain conditions or which share common attributes, such "yes", "no" or "maybe" in a decision tree. The overlapping feature could be used to highlight topics which have distinct attributes and those which share them.
MindManager of course allows only a single boundary per parent topic or sub-topic which will incorporate all the sub-topics. If you attempt to highlight only a section of subtopics, they will each get their own boundary. There is however a limited workaround which allows you to achieve the following:
Here the subtopics are actually sub-subtopics. There is actually an "invisible" subtopic for each boundary which is a dummy only with no text or fill colour and a line only for topic shape, which is in the same colour as the sub-subtopic lines. This approach does not allow for any overlapping and can be applied only at the subtopic level or lower.