Suppose the input.c file has versions 1.1-1.6, and that you need to delete version number 1.3. How can you accomplish this task if the file is managed under

a) RCS (RCS/input.c,v)?
b) CVS ($CVSROOT/project1/input.c,v)?

a)Under RCS you would use the rcs command with the -o option to remove any version of a file. Thus you can use the rcs -o1.3 input.c command to accomplish the given task, as shown in the following session.
```
$ cd RCS
$ rcs -o1.3 input.c
RCS file: RCS/input.c,v
deleting revision 1.3
done
$
```
b. You can remove a file by using the rm, cvs remove, and cvs commit commands (in this order). See page 305 for an example.