@unknownuser said:
........I hid the section plane to export a clear image as to not have the gray haze over everything. I saved the file with the section plane hidden. When I open it back up I am unable to unhide the section plane......
Whenever you get in a situation that you can't find something in your model, then turn ON:
all geometry (SU's menu View > check 'Hidden Geometry')
all layers (SU's menu Window > Layers > check all layers)
all section planes (SU's menu View > check 'Section Planes')
Now your entire model should is visible (guides not yet included!)
As you can see, section planescan be hidden + on an invisible layer+ turned OFF.
This may make them hard to find.
To also display guides and guide points, see View > check 'Guides'.