Buffer
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Defination: It is the in-memory defination of a file.
	    It represent the content of the file by 
	    storing it inside memory.

Opening multipe files in Vim.

* From terminal
   vim <file-1> <file-2> ....


* Shell expansion shortcuts:
   vim file*

   This will open all the file which follow pattern
   in their file name that is mentioned as an argument
   here. 

* To see all the open buffers:

   Use commands: :buffers

* To know more on buffers:

   Use commands: :h :buffers

* To change the buffer to another opened file

   :buffer <buffer number>
   :buffer <filename>

   Note : Instead of :buffer, we can use :b.

* To open to the next buffer of the current opened buffer.

   We can use: :bnext or :bn
   
   To do this in opposite direction we can use:

   :bprevious or :bp

* To go to the first buffer.

   :bfirst or :bf

* To go the last buffer.

   :blast or :bl

* Shortcut key-binding to move to the previously editing buffer.

   CTRL + ^

* The %a and # symbol meaning.

   %a : Represent the active buffer and currently loaded.
   #  : Represent the previously editing buffer.

* Another way to move back to the alternate buffer.

   :b#

%% TIPS %%

When we try to do the editing on the current buffer and check the 
buffer list.
It will present a '+' indicating that the editing done is not saved.
And when we try to change the buffer, it wil throw error.

We can still force to change the buffer by using '!'.

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There are three states of buffer.

-> Active state and showing the buffer.

-> Inactive state and not shown in the buffer.

-> Inactive state but in the memory. (#h +)


* To allow the buffer to be hidden without writing it into the file.
  We can use option:
   :set hidden

   This allow to edit multiple buffer without necessarily writing it.

* To abandone all the changes of all the buffer.

   :qall!

* To save all the changes of all the buffer.

   :wall

* To open another file without switching to that new window of the same file.

   :badd <filename>

* To unload a currently active buffer.

   :bdelete or :bd <name or number> -> This is optional if the buffer is not the current active file.

* To delete range of buffer.

   :<start-number>,<end-number>bd

   and 
  To delete all the buffer.
   :%bd

* To execute a line command on each and every buffer.

   :bufdo set <option>
   :bufdo ....

* To execute multiple line command in line-command mode.

   We can use '|' symbol.

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Explore
--------

Command: :Explore or :E

It is file explorer CLI which allow to navigate directory and open any file in the buffer.
This CLI like look also a special buffer which we can delete using :bd command.