The Grammar View performs the mappings into your tables, displays the table grammar of the first matching message definition and shows you which data will be mapped out into the selected table. It then displays the extracted data graphically.

	Before starting, download this sample VMD file that you can use to perform the steps in this section.

To use the Grammar View:

• Click the Browse icon in the toolbar. The Message Browser appears.
• Click the Table View tab, and check the Grammar View option.
• Copy and paste the following message into the top pane of the Browser.

MSH|^~\&||.|||199908180016||ADT^A04|ADT.1.1698593|P|2.5
PID|1||000395122||LEVERKUHN^ADRIAN^C^^^||19880517180606|M|^^^^^||6 66TH AVE NE^^WEIMAR^DL^98052||(157)983-3296|||S||
NK1|1|TALLIS^THOMAS^C|GRANDFATHER|12914 SPEM ST^^ALIUM^IN^98052|(157)883-6176
NK1|2|WEBERN^ANTON|SON|12 STRASSE MUSIK^^VIENNA^AUS^11212|(123)456-7890
PV1|1|E|EMG-W^^|1||||||||||ER||||ER||H|||||||||||||||||||OVL||REG|||199908180015
GT1|1||SMITH^JAMES^M||12914 164TH AVE NE^^RICHMOND^ON^98052|(157)883-6176|||||F|535-52-9776||||WEISS JENSON|.^^WELLINGTON^ON^.|
IN1|1|PRE2||LIFE PRUDENT BUYER|PO BOX 23523^WELLINGTON^ON^98111|||19601||||||||THOMAS^JAMES^M|F|||||||||||||||||||ZKA535529776

• Click the Parse button. The table grammar for the first matching message definition is displayed in the bottom pane.
• Click the Patient table. The data that will be extracted into the Patient table is displayed in the right pane.

The right pane displays the data much like a table in a database, but instead displays columns on the left side and the row number along the top. This view is useful for verifying that your mappings are not only correct, but to also check what data will be mapped from incoming messages. If the parse is successful, your tables will be correctly populated. If the parse fails, an error message will be displayed, similar to the one that would appear at runtime.