eol=c Specifies an end of line character. The For command only allows you to specify one
character.
skip=N Specifies the number of lines to skip at the beginning of the file.
delims=xxx Specifies a delimiter set. The delimiter set defines which characters the For command
views as elements between tokens. The default setting relies on the space and tab. Consequently,
the For command produces a new token every time it sees a space or tab within the
input.
tokens=X,Y,M-N Defines which tokens to retrieve from each line of text to pass to the For command
body for each iteration. The For command allocates one variable for each of the tokens.
The M-N format defines a range of tokens to use as input. Whenever the last character in a processed
string is an asterisk (*), the For command creates an additional variable to receive the
additional text on the line after the For command parses the last token.
usebackq Specifies that you can use quotation marks to quote filenames in FileNameSet, a
back quoted string is executed as a command, and a single quoted string is a literal string
command.
You need to use a slightly different command line syntax with the For command when you rely
on the usebackq keyword.
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