[R] survfit plot question

[Terry Therneau]

On 03/05/2013 05:00 AM, r-help-request at r-project.org wrote:
> Hello, I create a plot from a coxph object called fit.ads4: plot(survfit(fit.ads4)) 
> Questions: 1. What is the cross mark in the plot ? 2. How does the cross mark in the 
> plot relate to either the "rmean" or the "median" from survfit ?
Try help(plot.survfit).  Read the description of "mark.time".
>
> 3.  What is the meaning of the "restricted mean" ?  The "upper limit" noted
> in the output is the "end of the observation period" (i.e., it is always
> the Stop value in the Censored observation)
help(print.survfit)