library(magrittr)
specials <- '& % $ # \\_ { } ~ \\^ \\'
# \donttest{
# specials %>% as_spork %>% as_previews
# specials %>% gsub(' ','',.) %>% as_spork %>% as_previews
# 'one joule (Omega) ~ 1 kg*m^2./s^2' %>% as_spork %>% as_previews
# disambiguation for plotmath and latex (see \code{\link[grDevices]{plotmath}}):
# 'epsilon.varepsilon' %>% as_spork %>% as_previews
# 'rho.varrho' %>% as_spork %>% as_previews
# 'Upsilon.Upsilon1' %>% as_spork %>% as_previews
# 'phi.phi1.varphi' %>% as_spork %>% as_previews
# 'sigma.sigma1.varsigma.stigma' %>% as_spork %>% as_previews
# 'theta.vartheta.theta1' %>% as_spork %>% as_previews
# 'omega.omega1.pi.varpi' %>% as_spork %>% as_previews
# }
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