         Parameters: 
   [col#[end#]] /str1/str2 [/[GLOBAL][VER][#lines|R range[#subs]]]
   (MATCH patterns -  :L=locate  :C=change  ::=ellipsis  :#=auto#)
  
 changes  the  first occurrence of the character string "str1" to
 "str2" for "#lines" lines (beginning with the current  line)  or
 for a  range  of line numbers.  The strings must be delimited by
 slashes or some other character not  occurring  in  the  strings
 themselves.   If  the second slash is omitted, "str2" is assumed
 to be null, and if the third slash is omitted, "str2" is assumed
 to extend to the last non-blank character in the  command  line.
 The third slash must be given if options are specified. 
 If  both  strings  are  omitted, the previous change strings are
 used again. 
  
 The search for "str1" begins in column 1 of the line and ends at
 the line length, unless the range of column  numbers  "col#"  to
 "end#" is  specified  (no space preceding "col#").  If "end#" is
 omitted, the remainder of the  line  is  searched.    Each  line
 changed  is  printed  unless the VERIFY switch is set to "NO" or
 the "V" option is used. 
  
 The "Change-String" command has the following options which  may
 be entered in any order: 
  
 GLOBAL - (or "G") (meaning global within each line)  applies the
      change to all occurrences of "str1" in  as  many  lines  as
      specified by "#lines". 
 DELETE - (or "D") deletes the remainder of a line after the last
      change on the line. 
 VERIFY - (or "V") alters the setting of the VERIFY switch (refer
      to the "Alter" command) for the duration of the command. 
 #lines [#subs] -  requests  "#subs" substitutions in each of the
      next "#lines" lines; defaults to 1 for 1  line  only.    An
      asterisk (*) signifies all remaining lines. 
 RANGE beginline#[end#[#subs]] - (or "R")  requests substitutions
      as above for a specific range of line numbers. 
  
 MATCH Patterns
  
 The   "Change-String"   command    recognizes    some    special
 character-matching patterns   in   "str1"  and  "str2".    These
 patterns each consist of two characters - the  MATCH  character,
 initially a  colon  (:),  and a pattern name character.  Pattern
 name characters may be given in either upper or lower case: 
  
 L - (pattern ":L") is replaced by  the  "locate"  string --  the
      last  string  given  on  a "Locate-String" or "Find-String"
      command. 
 C - (pattern ":C") is replaced in "str1" by the value of  "str1"
      given in  the  last "Change-String" command.  In "str2", it
      is replaced by the current value of "str1". 
 MATCH - (pattern "::")  The  MATCH  character  appearing   twice
      indicates ellipsis.      This   will  match  zero  or  more
      characters  between  other  characters  given  in   "str1".
      Ellipsis is not recognized in "str2". 
 # - (pattern ":#")  is replaced by the current value of the AUTO
      number (refer to the "Set-Option" command), which  is  then
      incremented for each occurrence of the pattern. 
  
 Patterns are  matched in a line of text from left to right.  For
 a GLOBAL change, patterns in "str1" are  substituted  only  once
 (except   for   ellipsis),   whereas   patterns  in  "str2"  are
 substituted for each occurrence of "str1" found. 
 MATCH-pattern substitution can be modified or disabled with  the
 "Set-Option" command. 
