This is a text-only command.
Type the text equivalent at the command prompt
SHOW ALL displays all hidden layers. You may find it more convenient than using the Select Layer dialog box.
To show (un-hide) a single hidden layer:
Use the SHOW command (Options > Layer Options > Show).
To hide all layers except the current layer:
Use the HIDE ALL command (Options > Layer Options > Hide All).
Text equivalent: SHOWA