Specify time segements or recurrent episodes by endpoints.

time1 %to% time2

time1 %2% time2

## Arguments

time1 The left end-points of the recurrent episodes. The right end-points of the recurrent episodes.

## Value

A list that consists of two elements named "time1" and "time2".

## Details

This function is intended to be used for specifying the argument time in function Recur.