Easy to understand (5)
'easy to understand' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for clear that I've seen before include "Leap over" , "Obvious; jump over" , "Transparent - free of obstruction" , "Get net" , "Unimpeded" .)
'easy to understand' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for lucid that I've seen before include "Rational, clear" , "Clear, intelligible" , "Clear and comprehensible" , "Easily understood; sane" , "unlike 5 [OPAQUE]" .)
'easy to understand' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for user-friendly that I've seen before include "Easily picked up" , "Easy to operate" , "Easy to understand or manipulate" .)