=============================================== Link - class to represent link =============================================== Link() - generic constructor, creates a Link with zero coordinates Link(Link) - copy constructor Link(index1, index2) - creates a Link between nodes index1 and index2 parent (read-only) - Link's parent object, Glyph node1, node2 (integer) - indexes of the nodes that are linked none ToHint() - transforms link to Hint (and returns it as a result) using parent as a source of node coordinates. Parent must exist