do expression [as scriptLanguage]
The do keyword forces HyperCard to evaluate expression and to send the result as a message to the current card.
The value of expression can contain more than one line. For example, if you have a series of statements in a card field called Example, HyperCard will apply do to each line:
do card field "Example"
When you use the as scriptLanguage form, HyperCard executes the script in expression using the OSA-compliant scripting component named in scriptLanguage:
do field 1 as AppleScript do theScript as UserTalk
You can also send do from the Message box.