| vp | R Documentation | 
Used to print messages to the screen and the log file.
vp(cfg, str, fmt = "alert")
cfg | 
 ubiquity system object  | 
str | 
 sequence of strings to print  | 
fmt | 
 string format should be one of the following:   | 
Boolean variable indicating success (TRUE) or failure (FALSE)
# Creating a system file from the mab_pk example
fr = system_new(file_name        = "system.txt", 
                system_file      = "mab_pk", 
                overwrite        = TRUE, 
                output_directory = tempdir())
# Building the system 
cfg = build_system(system_file  = file.path(tempdir(), "system.txt"),
      output_directory          = file.path(tempdir(), "output"),
      temporary_directory       = tempdir())
# Initialzing the log file
vp(cfg, "Message that will be logged")
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