16,17c16,17
< E_XCD=66       # Can't change directory?
< E_NOTROOT=67   # Non-root exit error.
---
> E_XCD=86       # Can't change directory?
> E_NOTROOT=87   # Non-root exit error.
28c28
< # Test if command line argument present (non-empty).
---
> # Test whether command-line argument is present (non-empty).
32c32
<   lines=$LINES # Default, if not specified on command line.
---
>   lines=$LINES # Default, if not specified on command-line.
37c37
< #+ as a better way of checking command line arguments,
---
> #+ as a better way of checking command-line arguments,
40c40
< #    E_WRONGARGS=65  # Non-numerical argument (bad arg format)
---
> #    E_WRONGARGS=85  # Non-numerical argument (bad argument format).
58c58
< fi  # Doublecheck if in right directory, before messing with log file.
---
> fi  # Doublecheck if in right directory before messing with log file.
60c60
< # far more efficient is:
---
> # Far more efficient is:
70c70
< tail -n $lines messages > mesg.temp # Saves last section of message log file.
---
> tail -n $lines messages > mesg.temp # Save last section of message log file.
74c74
< # cat /dev/null > messages
---
> #  cat /dev/null > messages
81,82c81,82
< #  A zero return value from the script upon exit
< #+ indicates success to the shell.
---
> #  A zero return value from the script upon exit indicates success
> #+ to the shell.