HyperCard 2.x yields time to MultiFinder (and hence other applications)
under the following circumstances:
* When HyperTalk handlers execute
* When the busy cursor is rotated (for example, during sorting, compacting, and
printing)
* During the Show Cards and Wait commands in scripts
HyperCard 2.x notifies the user when his intervention is required (for
example, a script wants to display an Ask or Answer dialog. When this
occurs, HyperCard 2.x beeps, puts a diamond next to its name in the Apple
menu, and flashes its small icon in the menu bar. A dialog appears when
HyperCard 2.x becomes the active program. Because HyperCard needs some
working room on the disks you create, make sure you have at least 50K or so
of free space on each HyperCard disk you use.
This article is adapted from the Claris Tech Info database.