title: call cs:label instruction
body: <p>What does this syntax mean?</p>
  <p><code>call cs:label</code></p>
  <p>For example I've run into such instruction:</p>
  <p><code>call cs:MessageBoxA</code></p>
  <p>why isn't it like:</p>
  <p><code>call MessageBoxA</code>?</p>
  <hr />
  <p>I've found that instruction in the IDA Pro (v6.8) disassembled code of some Win <code>exe</code>file.</p>
  <p>Here is the hex opcode of the instruction:<br />
  <code>2E FF 15 24 01 6C 00</code></p>