- If the screen has not been initialized, or the <I>level</I> parameter is out
- of range, the function returns <B>ERR</B>. Otherwise, it returns the previous
- level: <B>0</B>, <B>1</B> or <B>2</B>.
+ If the screen has not been initialized, or the <EM>level</EM> parameter is out
+ of range, the function returns <STRONG>ERR</STRONG>. Otherwise, it returns the previous
+ level: <STRONG>0</STRONG>, <STRONG>1</STRONG> or <STRONG>2</STRONG>.