help.txt

简单的Dos界面的文本编辑器

--------------------help system of all commander------------------------

   SIGN              EXAMPLE               FUNCTION EXPLAINATION

    #                  201             # <true range   position in the perlin
                                       # < 1           position in the first
                                       # >true range   position in the last 

    i                  i               insert new lines after the perline.     
    i #                i  21           insert new lines after the # line,
                                       then position in the #+1 now.
    ib                 ib              insert new lines before perline.
    ib#                ib 21           insert new lines before the # 

    a                  a               add the new lines the user input 
                                       after the whole file .

    l                  l               display line form preline+10 to
                                       preline+10 with linenum,if possible
    l #                l  21           display line form line #-10 to # +10 
                                       with linenum,if possible
    ln                 ln              display line form preline-10 to  
                                       preline+10 if possible
    ln#                ln 21           display line form line #-10 to #+10
    d                  d               delete the perline.
    d #                d  21           delete the #th line.
    d # length         d  21 3         delete lines at the number of length 
                                       after the #th line.

    f str # length     f abc 21 5      find str in range of length lines after 
                                       the #th line.
            
    c str1/str2        f ab/12345      replace str1 to str2.  
    c str1/str2 # len  f ab/123 20 3   replace str1 to str2 from the #th line
                                       in the range of length line.
            
    r str              r file          read file str after the perline 
    r str #            r file 20       read file str after the #th line 

    p #1 length #2     p 2 2 2         copy [length] lines from the #th after 
                                       after the #th line.
 
    s                  s               save the files and not exit

    e                  e               save the files and exit

    q                  q               do not save the files and exit 

    h                  h               display all the help order
    h str              h insert        display insert order

    w str              w filename      save file as the name of filename
                                       then keep the compile enviroment

    w str#length       w file 2 20     save the [length] lines after the #th
                                       line as the name of file.