Try this.
Make SAS Explorer the active window, click on Tools>Options>Explorer. Go the Members tab. Click on the Table Icon to select and then the Edit button.
What does the option next to &Open look like? Highlight &Open and then click edit and you will be able to copy and paste the result here.
For my install I have this:
VIEWTABLE %8b."%s".DATA openmode=edit
which says to open using Viewtable, set the mode so that I can edit (mostly sort) the table