undocumented: Internal Functions
In leogama/ggtern: An Extension to 'ggplot2', for the Creation of Ternary Diagrams

INTERNAL FUNCTIONS: ggtern makes use of several non-exported internal functions, list are as follows:

ifthenelse(x, a, b)

is.numericor(A, B)

find_global_tern(name, env = environment(), mode = "any")

tern_dep(version, msg)

arrow_label_formatter(label, suffix = NULL, sep = "/", ...)

joinCharacterSeries(x, lastWord = "and")

identityInv(z)

getFormulaVars(x, dependent = TRUE)

scales_add_missing_tern(plot)

layers_add_or_remove_mask(plot)

`x`	logical input to check
`a`	value to return if `x` is TRUE
`b`	value to return if `x` is FALSE
`A`	value to return if numeric
`B`	numeric value to return if `A` is NOT numeric
`name`	character name of object to search for
`env`	environment to search within as first priority
`mode`	the mode to search within
`version`	The last version of ggplot2 where this function was good (in other words, the last version where it was not deprecated).
`msg`	The message to print.
`label`	character label
`suffix`	chacater suffix behind each label
`sep`	the seperator between label and suffix
`...`	additional arguments
`dependent`	whether to return the dependent variables (TRUE) or the indpenedent variables (FALSE)
`plot`	ggplot object
`latex`	logical as to whether latex formats should be parsed
`x`	character vector
`x`	input object
`x`	formula object
`ggplot`	object