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Two-column text with circular insert by Stephan Lehmke
The package pullquote allows to create differently-shaped inserts in two-column balanced texts.
Less fragile wrt. text content.
Allow page breaks.
Several / explicit positioning of inserts.
The shape is finished by Altermundus and zeroth in the following answer :
Draw a Batman logo in TikZ.
Make it into a node shape, with customisable colours, text inset into the bat, and anchors galore.
Add logos ...
Modify TikZ coil decoration
Separates the coil decoration in two - one that goes up and an other that goes down. This can be used to draw coils that wraps around e.g a cylinder.
I think that TikZ would benefit from a highlevel way to modify existing decorations.
How to change the line width of the lines connecting spies and the spied region
influencing both the line conncting the spy and the spied region, as well as the border of the spied region.