理解VIm的操作---Here is the extraction of content from the image:
**Title:**
Vim Visual Cheat Sheet
**Code Snippet and Annotations:**
```java
:6 private boolean foo;
private boolean # aReallyLongName;
private boolea e aReallyShortName;
private int bar1, bar2;
W
private boolean isFooAndBar(){
foo = false;
}
{ public void main(String args[]){
foo = true;
0 ^ bar1 = bar2 + 1 + fooClass.invokeRandomMethod(); $
bar1 = bar2 + 2;
}} fi
x bar1++;
bar2++;
if(foo) {
mx gd aReallyLongName
aReallyLongName
aReallyShortName
}
}
}
```
Annotations pointing to the code:
* `:6` -> Line number 6
* `#` -> Points to `aReallyLongName` (possibly showing a find match)
* `e` -> Points to the end of the word `boolea`
* `W` -> Points to the word `isFooAndBar` (possibly showing WORD movement)
* `{` -> Points to the start of the `main` method block
* `}` -> Points to the end of the `main` method block
* `{{` -> Points to the start of the outer class block
* `}}` -> Points to the end of the outer class block
* `0` -> Points to the beginning of the line `bar1 = bar2 + 1 + ...`
* `^` -> Points to the first non-blank character `b` on the line `bar1 = bar2 + 1 + ...`
* `$` -> Points to the end of the line `bar1 = bar2 + 1 + ...`
* `%` -> Connects the opening `{` of the `main` method block to its closing `}` (matching parenthesis)
* `fi` -> Points to the `}` closing the `if(foo)` block
* `x` -> Points to the character `b` in `bar1++` (possibly showing character deletion)
* `b` -> Points to the word `bar2` in `bar2++;`
* `w` -> Points to the word `bar2` in `bar1 = bar2 + 2;`
* `Ctrl-N` -> Points to `aReallyLongName` as a suggested auto-completion
* `gd` -> Points from the command `gd` to the definition of `aReallyLongName`
* `mx` -> Points from the command `mx` to the line containing `aReallyLongName` (indicating a mark)
* `Ctrl-W p` -> Points to the code in the left split window
* `Ctrl-W k` -> Arrow pointing up, implying moving focus upwards
* `Ctrl-W j` -> Arrow pointing down, implying moving focus downwards
* `Ctrl-W l` -> Arrow pointing right, implying moving focus right
* `Ctrl-W h` -> Arrow pointing left, implying moving focus left
* `Ctrl-W w` -> Implies moving focus to another window
**Diagram Descriptions:**
* **h, j, k, l directions:** A small diagram shows arrows from `h`, `j`, `k`, `l` to directions: `h` left, `j` down, `k` up, `l` right.
* **Scrolling:** Arrows show `Ctrl-B` scrolls up and `Ctrl-F` scrolls down.
**Movement/Range Section:**
* **Character:**
* h - left
* j - down
* k - up
* l - right
* word, WORD(all non-blank ch)
* w - next/prev word (arrow b is next/prev word)
* W - next/prev WORD (arrow B is next/prev WORD)
* e - end of word/WORD (arrow E is end of word/WORD)
* **Line:**
* 0 - begin/end of line (arrow $ is begin/end of line)
* ^ - begin (non-blank) of line
* **Paragraph, Block:**
* { - prev/next paragraph (arrow } is prev/next paragraph)
* [[ - begin/end of block (arrow ]] is begin/end of block)
* % - matching parenthesis
* **Window, File:**
* H - top of win (arrow zt is scroll to top)
* M - mid of win (arrow zz is scroll to middle)
* L - btm of win (arrow zb is scroll to bottom)
* C-B - prev/next page (arrow C-F is prev/next page)
* gg - begin/end of file (arrow G is begin/end of file)
* mx - mark/jump to x (arrow 'x is mark/jump to x)
**Mode Commands Section:**
* ESC C-[ - enter normal mode
* v - enter visual mode
* V - enter visual line mode
* C-v - enter visual block mode
* i - enter insert mode
* R - enter replace mode
* a - append
* A - append at end of line
**General Commands Section:**
* y - yank/copy (range)
* d - delete/cut (range)
* c - modify (range)
* x - delete/cut (character)
* D - delete to end of line
* C - modify to end of line
* p - paste after cursor
* P - paste after cursor
* J - join lines
* r - replace (character)
* > - indent
* < - indent leftward
* . - redo
* u - undo
**EX Commands Section:**
* :w - save
* :wq - save and quit)
* :q - quit
* :q! - quit anyway)
* :e x - edit file x
* :n - new window
* :h - vim help
* :xx - jump to line #xx
**Search Section:**
* \* - find current word backward/forward (arrow # is find current word backward/forward)
* fx - to character x to right
* gd - to definition of current word
* /xxx - search xxx
* n - next/prev search result (arrow N is next/prev search result)
**Auto-completion [insert mode] Section:**
* C-N - auto-complete
* C-P - next/prev keyword
* C-X C-F - auto-complete file name
**Split window Section:**
* :vsp :sp - vertically/horizontally split
* :diffsplit :diffs - split and diff
* C-W p - to last accessed window
* C-W w - to next window
**Bottom Section:**
* Sample.java [+]
* AnotherNew.java
* /fooCl
* import java.awt.*;
* import java.awt.event.*;
* public class Another
* 23,29 83%
* AnotherNew.java 3,0-1 Top
* Top Another.java
* Created by vgod, Dec. 2009
**Split Window Layouts:**
* The bottom section shows two split windows side-by-side.
* Left window: Title "Sample.java [+]", content starts with `import java.awt.*;`, `import java.awt.event.*;`. Status bar shows file name and `23,29 83%`.
* Right window: Title "Top Another.java", content starts with `import java.awt.*`, `import java.awt.event.*`. Status bar shows file name and `3,0-1 Top`.
* Arrows point from `:vsplit` and `:sp` to a diagram showing two vertical splits and two horizontal splits respectively.
* Arrows point from `:diffsplit` and `:diffs` to a diagram showing two vertical splits with differing content highlighted.
* `Ctrl-W j`, `Ctrl-W k`, `Ctrl-W l`, `Ctrl-W h`, `Ctrl-W w`, `Ctrl-W p` commands are associated with navigating between these split windows.