In this <spam-removed> there are good boxes that have text and also other boxes.
So please guide the way to achieve this in writer and draw.
(edited to remove spam-link)
Have re-opened as this appears to be a legit question and the link was simply an example. Seems OP was referring to the diagrams in the document. Here is the pdf link again:
Also here is what may be a similar example:
https://wiki.openoffice.org/wiki/Documentation/DevGuide/Scripting/How_the_Scripting_Framework_Works
Seems to be a reasonable question.
Take the problem the other way round.
Draw the inner boxes first with their label (text inside). Add the connectors.
To delimit the “blocks”, draw a box around the inner boxes. Since block label is not centered, don"t use the usual labeling technique: leave this label blank but add a text box you can position anywhere.
Select the inner boxes, their connectors, the outer box and its text box. Group these objects. The group will behave as a single composite object (it can be moved, rotated, … as a whole).
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