title: Software Requirments Specification (SRS): What are 'System Interfaces'?
body: <p>In the <a href="http://en.wikipedia.org/wiki/Software_requirements_specification" rel="noreferrer">Wikipedia link</a> for SRS, in the 'Product Perspective' section, there is a mention of the term 'System Interfaces'. I am not clear as to what exactly that means. I have looked at a few other SRS samples available online but am not able to piece together an unambiguous definition from the examples. Could someone elaborate on what 'System Interfaces' refer to?</p>