Ladder Tool

The Ladder Tool enables the user to build various hierarchies of knowledge. These hierarchical (tree-like) diagrams are referred to as ladders (a term taken from knowledge engineering). PCPACK allows any type of ladder to be constructed, such as a concept ladder, attribute ladder, process ladder and decision ladder (see knowledge models for descriptions of these).

The ladders produced can include any number of relations. Knowledge objects marked-up in the Protocol Tool are automatically displayed in the appropriate ladder and are easily moved around and re-named to create the ladder structures. New objects can be added using the Ladder Tool, either as a higher-level object (using the ladder up command) or a lower-level sub-node (using the ladder down command).


Basic Features

  • Any number of ladders
  • Any type of ladder
  • Multiple relations per ladder (if required)
  • Multiple root objects (if required)
  • Hide / Reveal functions
  • Drag-and-drop from one ladder to another
  • Symbols in nodes showing annotated objects and root objects of other ladders
  • Style options for objects and links
  • Easy assignment of attributes and values (using drag-and-drop)
  • Undo/Redo and Find/Replace functions
  • Tangled or Untangled views 


Example Ladder

An example of part of a ladder produced using the Ladder Tool is shown below. Colours have been used to distinguish different types of objects and different types of relations.


User Interface

The user interface of the Ladder Tool is explained in the following figure.



Other PCPACK tools:

Go to: Protocol Tool
Go to: Diagram Tool
Go to: Matrix Tool
Go to: Annotation Tool
Go to: Publisher Tool
Go to: Diagram Template Tool


Last modified: 20 November 2003