Star Micronics NP-IO manual Lprint Next Lprint Lprint

65

30 FOR I=1 TO 10

40 LPRINT "I"

50 NEXT I

60 LPRINT : LPRINT

70 LPRINT CHR$(27);"Ul";

80 FOR I=1 TO 10

90 LPRINT "I"

100 NEXT I

110 LPRINT CHR$(12);CHR$(27);"@"

Here is what you will get. The top line is printed bi-directional- ly, and the bottom is printed uni-directionally. You will have to look hard because there isn’t much difference, but the bottom vertical lines are perfectly aligned.

Let’s analyze the program. Line 20 defines the line spacing to 7/72 of an inch so that the characters that we print will touch top to bottom. Lines 30 - 50 print 10 vertical line characters. Then line 70 sets uni-directional printing and the vertical lines are printed again. Finally line 110 sends a form feed to advance the paper to the top of a new page, and then uses the master reset to restore the printer to the power on condition.

You can also set the printer to print in one direction for one line only by using the (ESC) “(” command. This command im- mediately moves the print head to the left margin and then prints the remainder of the line from left to right.