On the Word 2013 powerpoint presentation that I am working on, my first in Word 2013, I noticed that the equations that I typed in with the formula editor are now converted to graphics and I am not edit them anymore.

This conversion seems to have occured after I saved the presentation and restarted the computer.

1) is there a way to open the presentation so that I can edit the equations again?

2) is there a way to avoid this from happeneing again?

Mike D