Sequence diagram

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I see that Umbrello project is pretty mature so I wonder why there is a
lack (or I don't know
how to achieve it)  of some options.
For now I see  that I can't add a simple activation box to the live line in
a sequence diagram. The only way to get an activation box is to use
synchronous message, but I cant add the box for asynchronous message.
I also see that I can do that on the object itself as well.
What's more there is no a nice representation for nested activation box
which should be a little shifted in relation to an activation box it
derived from.

Could You  refer to doubts stated above?

Best Regards
Wojciech

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<div dir=3D"ltr"><div>I see that Umbrello project is pretty mature so I won=
der why there is a lack (or I don&#39;t know <br>how to achieve it)=C2=A0 o=
f some options.<br>For now I see=C2=A0 that I can&#39;t add a simple activa=
tion box to the live line in a sequence diagram. The only way to get an act=
ivation box is to use synchronous message, but I cant add the box for async=
hronous message.<br>I also see that I can do that on the object itself as w=
ell. <br>What&#39;s more there is no a nice representation for nested activ=
ation box which should be a little shifted in relation to an activation box=
 it derived from.<br><br></div><div>Could You=C2=A0 refer to doubts stated =
above?<br></div><div><br></div><div>Best Regards <br></div><div>Wojciech<br=
></div><div><br></div></div>

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