1.71.1 Instance variables

handle <-> kind: name

The connection object of a link object may attach to this handle if the link<-from or link<-to (depending on the side of the connection concerned) matches this name.

handle <-> name: name

This slot determines the logical name of the handle. It's value is used to communicate about handles.

handle <-> x_position: expression

This slot determines the position of the handle relative to the graphical. Its value is an expression expressed in w and h of the graphical object the handle belongs too. Legal expressions are:

• integer, number object or real object
• a function object Actually, w and h are converted to var objects with this name.
• a binary_expression object Below are some commonly used examples:

  30	30 pixels
  w/2	half of the graphical<-width.
  h+10	ten more than the graphical<-height.

handle <-> y_position: expression

Inherits description from: handle-x_position