set the tangle option when knit()
set the tangle option when knit()

antass/labnotebook3,fboehm/cboettig_site,fboehm/labnotebook,fboehm/labnotebook,fboehm/cboettig_site,fboehm/cboettig_site,fboehm/labnotebook,fboehm/cboettig_site,antass/labnotebook3,fboehm/labnotebook,antass/labnotebook3,fboehm/labnotebook,fboehm/labnotebook,fboehm/cboettig_site