Manual for the tcolorbox package

tcb/rounded corners=〈position〉
(default all, initially all)
The /tcb/rounded corners can be used to revert a /tcb/sharp corners → P. 33 setting.
The 〈position〉 denotes one or more of the four box corners to be set as rounded corners.
The not assigned corners will retain their mode. Feasible values for 〈position〉 are 2 :
• northwest
• northeast
• southwest
• southeast
• north
• south
• east
• west
• downhill
• uphill
• all
\begin{tcolorbox}[colback=red!5!white,
colframe=red!75!black,sharp corners,
rounded corners=northwest ]
This is a \textbf{tcolorbox}.
\end{tcolorbox}
This is a tcolorbox.
/tcb/sharpish corners
(style, no value)
Shortcut for setting /tcb/arc → P. 24 and /tcb/outer arc → P. 24 to 0pt. With this setting,
rounded corners will appear als quasi-sharp, but e. g. the shadow will be somewhat rounder
than the shadow of really sharp corners.
Corners are still of type rounded with this option, but appear sharp. To switch back to
rounded corners, one has to adapt /tcb/arc!
→ P. 24 and /tcb/outer arc → P. 24 .
\begin{tcolorbox}[colback=red!5!white,
colframe=red!75!black,
sharpish corners ]
This is a \textbf{tcolorbox}.
\end{tcolorbox}
This is a tcolorbox.
2 The graphical examples assume that the boxes where set to have sharp corners before.
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