The online manual tools use two mechanisms to communicate. First of
all, a CARD may be SELECTED. All other manual tools will highlight the
currently selected card. The CARD VIEWER will show the textual contents
and relations of the selected card. Selecting a card is done by
LEFT-CLICKING on the card, or by selecting the SELECT option from
the POPUP MENU associated with most representations of a card.
The manual can be requested to FOCUS on a specific card. The general
intention is that each tool is given the opportunity to focus
on that card. In practice, the current implementation makes this feature
only handy for cards representing a CLASS: requesting it to become the
focus makes the Class browser
jump to the associated class.
