[R] apropos("plotmath") curiousity

[Anne York]

?plotmath produces the helpscreen for plotmath. 

Why does apropos("plotmath") return only character(0)? 

> apropos("plotmath")
character(0)

> 
> version
         _              
platform i386-pc-mingw32
arch     x86            
os       Win32          
system   x86, Win32     
status                  
major    1              
minor    4.1            
year     2002           
month    01             
day      30             
language R    
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Anne E. York
National Marine Mammal Laboratory
Seattle WA 98115-0070  USA
e-mail: anne.york at noaa.gov
Voice: +1 206-526-4039
Fax: +1 206-526-6615
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