B-liner Diagram Example: Warnier/Orr Transaction Processor Program Design     Note:        Click on + / - to hide and expand statements

- Transaction   Processor

+ .Begin + First Instance . Load resources . Setup configuration data base from configuration file . Register windows: supervisor, text, graphic, various dialogs . Allocate global data base from dymanic memory . Setup directory or + First Instance . Get global data from previous instance . Save the application instance handle . Link instance node to application list + Supervisor Initialization . Create supervisor window . Show window . Initialize directory object . Initialize supervisor window + Message   {M} . Get the message . Translate message + Translate   successful + Process message + mouse move . pointer motion or + scroll . Scroll directory object or + Menu + Copy . Copy directory object + Delete . Delete directory object + Download . Download directory object + Find . Find directory object + Print . Print an element of directory object + Read . Close supervisor . Read object or + Translate   successful + Issue error . Display error message on control monitor . Send error message to sender . Log error + .End . Remove current node from the application list . Free node into dynamic memory + Application list empty . Shut down directory or + Application list empty . skip

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