Authoring Design Decisions ‐ RulePad

• When the user makes a change in the Graphical Editor, the Graphical Editor parser modifies the text in the Textual Editor.
• Alternatively, if the user changes the text in the Textual Editor, the grammar parser parses the text, and using the parse tree, the elements in the Graphical Editor are generated.
• To create a checkable design rule, the text in the Textual Editor is parsed by the grammar parser and then the parse tree is translated into XPath queries by the XPath generator.
• The XPath queries along with other information create the design decision.
• RulePad also provides instant feedback for design rules by checking the rule against the code and extracting snippets from the code.