Used in the plot axis drawings.
TT.switch(blr.clock = TT.get("blr.clock"), c1 = NA,
c2 = NA, c3 = NA, c4 = NA, blr.order = c(1, 3,
2))
Julien Moeys [aut, cre], Wei Shangguan [ctb], Rainer Petzold [ctb], Budiman Minasny [ctb], Bogdan Rosca [ctb], Nic Jelinski [ctb], Wiktor Zelazny [ctb], Rodolfo Marcondes Silva Souza [ctb], Jose Lucas Safanelli [ctb], Alexandre ten Caten [ctb]