      "Char"  
 "Str".    .
================================================================================

LPOS[*] [*] [-case] [[*][~]VName][, [~]LVName]=Char, Num, Str //prefix* for many
LPOS**[*][#$] [-qu -delims:Separator -case] [[~]VName][, [~]LVName]=SubStr, Num, Str

*	,   VName
~	     (  )
VName	      
-case	    (.,  ""  "")
Str	     ,     
Char	 ,   ,    
	.       .
	   ", ",     =. 
Num	 ,     (  ) ,
	(1 - , 3 - ).  - 1
LPOS*	   ,  "="  ", ",   
	   
LPOS**	       ,  
***  -qu     MSTR
$	 
#	 TAB
-delims	   ( \n\r\t\v\f\b)
--------------------------------------------------------------------------------
    ~VName         .
   Num ,        
,       (.,  -1   
  ,  -2 - ).
     0, ,    .
     ,     
  ,      .

******************************************************************[]*****
LPOS iPos=a,2,123A56R1234A6Uabcdef //  12 (%iPos%),     "A"
LPOS iPos=|,1,123A56|1234A6|abcdef //  7 (%iPos%),      "|"
LPOS *iPos=a,2,123A56|1234A6|abcdef  //  12 15 (  ,    )
LPOS ~A8=txt,,zip#arj#rar#7zip#txt#doc //  7 (7-   )
LPOS A8=txt,-1,zip#arj#rar#7zip#txt#doc //  20 (20-   ,   )
LPOS** -delims:@ A8=txt,,zip@arj@rar@7zip@txt@doc //  5,  "@"
LPOS*** &&P2="BB FF 199", , AA "BB FF 199" DD //  2