Use more accurate terms in docs or help.

[6lj6]

h

1. is not Move left
2. is Move logical cursor backward(direction) of text by a step of char if possible, it contains 4 different subclasses
   1. if logicalLine is shorter than screenLine => move cursor left per char in line
   2. if at first end of two ends of linear logical chars(text), => nothing
   3. if at first end of two ends of linear screenline chars(text) => move cursor up to the end of above line where meets the break char \n (ENTER)
   4. if logicalLine is longer than screenLine, it won't move visualScreenCusor, but moving LogicalLine right, therefore logicalCusor move to left on logical chars.

j

1. is not Move up
2. is Move between \n and stay the nearest position of chars of original line except other operation
   1. So it change the position of the row's index

b
    backward cursor to a wordStart(between \n SPACE), select a word of that wordStart
        select with space at right if have
            without \n
        TAB \t counts a selection
        punctuation counts as a selection
        dual punctuation () counts as one selection
        N b will only select 1 word instead of N words

[the-mikedavis]

Documenting the nuances of the motions could fit in #997

This is too verbose to fit in the current command documentation though.

[6lj6]

If the degree of abstraction in doc need to be high(concise), is it possible to add a low-level(detailed) specification 😃