title: What is a pdf bcmap file?
body: <p>I am using a pdfjs viewer in my web application and it comes with all these bcmap files. I traced the network traffic and they are not being called for. </p>
  
  <p>I don't really want to add these files to version control or the issue tracking system b/c there are so many of them, if they will not be needed.</p>
  
  <p><a href="https://i.stack.imgur.com/vDZxr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/vDZxr.png" alt="enter image description here"></a></p>
  
  <p>What is a bcmap file?</p>