Hi:
I thought he might also have an INPUT statement with : or ?? or + and might call them delimiters because he wasn't sure what they were doing in the INPUT statement.
This section of the doc talks about delimiters
http://support.sas.com/documentation/cdl/en/lrdict/59540/HTML/default/a000146932.htm#a000165927
and looking up the options described here
"The delimiter-sensitive data (DSD) option, the DELIMITER= option, the DLMSTR= option, and the DLMSOPT= option affect how list input handles delimiters."
might be a good place to start looking for a discussion of delimiters.
The section on the INPUT statement covers the various symbols you can find in the INPUT statement (@ + : ?? ) etc. And this section covers the colon format modifier (to read using an informat) and the ampersand format modifier (to read embedded blanks)
http://support.sas.com/documentation/cdl/en/basess/58133/HTML/default/a001360509.htm
Finally, this tech support note has some handy examples of reading in delimited data:
http://support.sas.com/techsup/technote/ts673.html
These sections in the doc are a good place to start. If nothing else, they contain enough examples that a more specific question might be the result.
cynthia