Draw a straight line on LCD
@status current Introduced in 2.0.0, flags introduced in 2.3.6
x1,y1
(positive numbers) starting coordinate
x2,y2
(positive numbers) end coordinate
pattern
SOLID or DOTTED
none
If the start or the end of the line is outside the LCD dimensions, then the whole line will not be drawn (starting from OpenTX 2.1.5)