I'm seeing an HTML attribute and I want to know more about it
I looked for answers in StackOverflow
<iframe src="NIB_MainFrame.asp" name="Principal" style="height:100%;width:100%;border:0;padding:0;border:0;margin:0;display:block;overflow-y:hidden" __idm_frm__="467"></iframe>`
I'm talking about the idm_frm attribute, sometimes I see it with the context of Selenium and I also saw idm_id
Any idea what it is?