What does `req.options.preview` do in a script?

melher39

I've seen this code in some legacy reports' scripts in my org but I can't seem to find documentation on what it means. And yes, I did search on the jsreport site and forum but couldn't find much or anything helpful.
The code is: req.options.preview = false
I logged the options object and it's just this (before setting it to false):

"options": {
      "preview": "true"

What does preview refer to here? Thanks in advance for your help

jan_blaha

This flag is used to mark the request running from jsreport studio.

Maybe you use it to disable the office preview. However, you should use req.options.office.preview=false instead.
https://jsreport.net/learn/office-preview