Reference

All functions
eval_ggcall()	Evaluate ggcall
`+`(<gg>)	Custom '+' Operator for ggcall Objects
ggcall()	Retrieve Construction Call from ggplot Object
ggcall_add_assignments()	Add Assignments to ggplot Construction Code
ggcall_env()	Retrieve Environment from ggcall
ggplot()	Enhanced `ggplot` Function with History Tracking