When I opened my last document. It came up showing code like the stuff below instead of my equations. How do I make it look normal again?
%!PS-Adobe-3.0 %%Creator: Wolfram Mathematica 11.2.0.0 for Microsoft
Windows (64-bit) (September 10, 2017) Student Edition - Personal Use
Only %%CreationDate: Thu Mar 15 08:27:13 2018 %%Pages: 2
%%DocumentData: Clean7Bit %%LanguageLevel: 3 %%DocumentMedia: Letter
612 792 0 () () %%BoundingBox: 54 32 554 761 %%EndComments
%%BeginProlog /languagelevel where { pop languagelevel } { 1 } ife