HyperCard: Accidental Creation of New Background (7/92)

If you copy a card to the clipboard, make changes to the background with
which that card was associated, then paste the card back into the stack,
HyperCard will create a new background for the card.

It will of course look almost identical to the cards of its original
background, but it will lack any objects or art created while it was
residing in the clipboard, and it will have a new background ID.

To test this:

1) Open a test stack.

2) Go to "Bkgnd Info..." under the objects menu and note the background ID,
click OK.

3) Choose "Copy Card" from the Edit menu.

4) Choose "Paste card" from the Edit menu, and check "Bkgnd Info..." to see
that the background ID number matches the first background ID.

5) Choose "Background" from the Edit menu.

6) Choose the pencil tool, then click anywhere to change just one pixel in
the background.

7) Choose "Paste Card" from the Edit menu, and check "Bkgnd Info..." again.
You will see that the background ID has changed.

This article is adapted from the Claris Tech Info database.