I've used OpenOffice for a good decade now, but it can be damned annoying sometimes.
You need to know the name of the "sub" program you want. For example, if
I want to launch LibreOffice Draw (on my Mint desktop), I do this:
~/Documents $ libreoffice --draw mydrawing.odg &
The & allows you to get the command line back while OpenOffice
stays up, running in the background (but it's still useful).
Some sections use templates as a way to correct perniciousness BEFORE new
documents are created. See below.
...that are the initial defaults in (especially) LibreOffice.
* OpenOffice Draw, Writer, etc.
In technical documents, it's rarely interesting to have editors like Writer,
Draw, etc. assume the first letter should be capitalized since case usually
matters. Turn this and other perniciousness off by...
Another very good thing to disable is URL Recognition and still
another is Correct accidental use of cAPS LOCK key.
To get the vertical, wavy line, I went to Google images and searched for "wavy
line vertical," copied the GIF, use gimp to reduce padding, make it
transparent, then I inserted it as an image from file.
To make the curved arrows, I followed the instructions
suck and the result sucks, but it's the only way until I get good at it.
So you can see through a box, circle, etc. to lines from object(s) underneath,
go to Format → Area → Transparency, click the radio button
Transparency and set the percentage of "see-throughness" you want.