Option (1) -- This option determines whether RENAME defaults to quiet mode. 
Whatever is chosen here can be toggled with a "Q" option on the command 
line.

Option (2) -- Normally RENAME does not find or rename system files unless 
the S option is used on the command line.  If "YES" is chosen here, all 
matching files, including system files, will be found and renamed by 
default.

Option (3) -- If RENAME finds another file whose name is the same as the 
new filename, it will ask if you want to delete the existing file first.  
Answering "YES" will cause RENAME to erase such a file without first 
letting you know that the file exists.  Erasing blind is not recommended, 
so most people will select "NO" here.

Option (4) -- If RENAME finds an existing read-only file, it will ask 
before erasing it, even if option 3 is set to "YES" and even if the E 
option is given on the command line.  Because read-only files are supposed 
to be difficult to erase, a "NO" here is highly recommended.