## S3 method for class 'history':
summary(object, \dots)
## S3 method for class 'summary.history':
print(x, digits=max(6, getOption("digits")-1), ...)"summary.history", usually, a result
of a call to summary.history."summary.history", which contains
pertinent information about the TDR record and its processing.read.pt for more information on dealing
with the pt data type, including examples.