[R] Tabs in PDF documents

[Dennis Fisher]

Colleagues,

I am using R 2.5.1 on an Intel Mac (OS 10) to create PDF outputs  
using pdf(); same problem exists in Linux (RedHat 9)

While adding text to the document with text() and mtext(), I  
encounter the following problem:

In order to align the text, I have embedded tabs ("\t") in some of  
the text.  Each time I do so, I get the following error messages:
	Warning: font metrics unknown for character 0x9
	Warning: font width unknown for character 0x9
and the tabs are ignored.  I have tied par() with and without  
family="mono".

Is there a work-around available for this?

Dennis

COMMANDS:
	pdf("junk.pdf")
	par(family="mono")
	plot(1,1)
	text(1,1, "\txx")
	mtext("\txx")
	dev.off()