HP 39GS hp 39gs_user's guide_English_E_HDPMG39AE13.pdf - Page 249

CLRVAR DISP DISPXY Programming Example 3 A:CHOOSE A; "COMIC STRIPS"; "DILBERT"; "CALVIN&HOBBES"; "BLONDIE": Clears the specified variable. The syntax is: CLRVAR variable : Example If you have stored {1,2,3,4} in variable L1, entering CLVAR L1 will clear L1. Displays textitem in a row of the display at the line_number. A text item consists of any number of expressions and quoted strings of text. The expressions are evaluated and turned into strings. Lines are numbered from the top of the screen, 1 being the top and 7 being the bottom. DISP line_number;textitem: Example DISP 3;"A is" 2+2 Result: A is 4 (displayed on line 3) Displays object at position (x_pos, y_pos) in size font. The syntax is: DISPXY x_pos;y_pos;font;object: The value of object can be a text string, a variable, or a combination of both. x_pos and y_pos are relative to the current settings of Xmin, Xmax, Ymin and Ymax (which you set in the PLOT SETUP view). The value of font is either 1 (small) or 2 (large). 18-27