	1	GRAPHXY;	The X-Y Graphics data editor is designed to allow the userGto create and modify graphics data files.  The file format is a binary,Junformatted, sequential access file.  The first record is a 72 byte headerDrecord.  The first word must be 0 simple X-Y data files. The next 70Hbytes are used for a graph title.  Each record (up to 600) following theDfirst has three elements; an INTEGER*2 element number running from 1+to 600, a real x-value, and a real Y-value.<	The menu prompts for three options, Display, Edit, and Use.CThe Display option will display the contents of the current defaultBgraphics data file.  During the display, hitting any key will halt>the scrolling of the data and let you return to the main menu.@	The Edit option allows you to edit data as if you were using a Hspread sheet calculator.  The arrow keys move the block up, down, right,Dand left.  Pressing the PF1 key will display the keypad layout.  TheEkeypad layout is the standard VPW keypad layout with the addition of Fthe GOTO, INSERT, DELETE, and TITLE keys.  Additional HELP on the edit1option is available when one is in the EDIT mode.9	The Use option allows you to use another data file.  By Bdefault the data file used is called GRAPH.DAT unless the calling Aprogram has passed on a default file name to use.  The Use Option+will display the current default file name.2	DATA_ENTRY:	Pressing the PF1 Key displays the keypad layout.  Use theDarrow keys to position the highlighted block to the data element youEwant to change. Data is not entered until you hit return.  Data for aEnew X-Y pair is not permanently entered until both X and Y values are	entered. ;	If the data file is long (so using the arrow keys would beEinconvenient), press GOTO and you will be prompted for a point numberBto goto.  If you want to goto the end of the file for adding data,Epress GOTO and enter 600 or some large number. You will be positioned(at the first available data entry slot. ?	If you want to insert data, position the cursor over the pointFwhere you wish the new data to be.  Press INSERT and the existing dataBwill be pushed down on row and you will be able to enter new data.IIf you wish to delete data, position the cursor over the point to delete.DPress DELETE and the X-Y data for that point will be deleted and theAfollowing data will be pushed up a row to fill the gap.  Finally,Gif you want to enter or change a title for a graph, press TITLE and youwill be prompted for a title.?	The DONE key or ^Z will let you exit from data editing and youFwill be prompted for whether or not to update the data file.  The QUITIkey will abort the editing process and leave the original data unchanged.