 UNIX-style ARGC/ARGV Parse  - ARGV
 Capitalize a Character      - CAPS
 Capitalize a String         - CAPSTR
 Character Test Routines     - ISx
 Character Skip Routines     - SKx
:ARGV - UNIX-style ARGC/ARGV String Parser

  ENTER: HL = Address of Null-terminated String to parse
	 DE = Address of token table
	  A <> 0 if Null is to be placed after each token
	      A = 0 if Null NOT to be placed after each token
  EXIT :  A = 0, Zero Flag Set (Z) if No Error
	      A <> 0, Zero Flag Reset (NZ) if more tokens
		  than allowed (last token pointer points to
		  the rest of the string)
  USES : AF

 Usage:  This routine is used to isolate tokens within a string
  for subsequent action such as filename or argument parsing.
  Tokens are delimited by spaces and tabs.  For example:
          "  THIS     IS    FUN  "
  contains three tokens, and ARGV will return pointers to the T
  in THIS, the I in IS, and the F in FUN.  If A <> 0 on input,
  ARGV will store binary 0s (nulls) over the first space after
  the S in THIS, the S in IS, and the N in FUN.  No changes are
  made to the string if A = 0 on entry.

  ARGV is called with the address of a table structured as:

	    DEFB    MAXENT    ; number of token pointers
  filled|   DEFS    1	      ; number of tokens found by ARGV
  in    |   DEFS    2	      ; pointer to token 1 (in string)
  by    |   DEFS    2	      ; pointer to token 2 (in string)
  ARGV  |   ...
        |   DEFS    2	      ; Ptr to token MAXENT (in string)

  If there were more tokens in the string than allowed in the
  token table, ARGV returns with A<>0 and the Zero Flag Reset
  (NZ).  In this case, the last token pointer points to the
  last token allowed, and extends to the end of the string.
  The null is not placed after the last token, so the rest of
  the string appears as a single token (and may be parsed by
  ARGV again).

:CAPS - Capitalize a Character

  ENTER:  A = Character to capitalize
  EXIT :  A = Capitalized character
  USES : AF

 Usage:  This routine simply returns the Uppercase version of
  any Lowercase ASCII character specified.  Characters other
  than those in the set [a-z] are returned unaffected.  If the
  character is a Lowercase alphabetic character, it is
  converted to Uppercase in the set [A..Z].  Only the lower
  seven bits of the byte are considered, and the Most Signifi-
  cant Bit is masked off to zero.

:CAPSTR - Capitalize a String

  ENTER: HL = Pointer to first byte of a string
  EXIT : None    (string is Capitalized)
  USES : None

 Usage:  This routine simply capitalizes a Null-terminated
  string specified in the calling parameters.

:                Character Test Routines 

Character Test routines check the specified ASCII character
(after masking off the MSB) to see if it meets a specified
condition.  All routines conform to the same conventions as:

  ENTER:  A = Character to test
  EXIT :  A = Character, Zero Flag Set (Z) if Condition is TRUE
		Zero Flag Reset (NZ) if Condition is FALSE
  USES : Flags

ISALNUM	- Is Alphanumeric Char?	- A-Z, a-z, 0-9
ISALPHA	- Is Alphabetic Char?	- A-Z, a-z
ISCTRL	- Is Control Char?	- Less than SP or DEL
ISDIGIT	- Is Digit Char?	- 0-9
ISGRAPH	- Is Graphic Char?	- Between SP and DEL
ISHEX	- Is Hexadecimal Char?	- 0-9, A-F, a-f
ISPRINT	- Is Printable Char?	- Between SP and DEL, incl SP
ISPUN	- Is Punctuation Char?	- Between SP and DEL, incl DEL
				     NOT 0-9, A-Z, or a-z
ISSP	- Is Space Char?	- HT, LF, VT, FF, CR, and SP

:                Character Skip Routines 

These routines are used to skip over characters in the string
specified until either a character of the type not being
skipped is encountered or the end of the string (NULL char) is
found.  They all conform to the same parameters as:

  ENTER: HL = Pointer to first char in Null-terminated string
  EXIT : HL = Pointer to character which terminated Skip
  USES : HL

 Character skip routines are:

	SKNPUN	- Skip Over Non-Punctuation Chars
	SKNSP	- Skip Over Non-Space Chars
	SKPUN	- Skip Over Punctuation Chars
	SKSP	- Skip Over Space Chars

  Punctuation Chars are those between SP and DEL which are NOT
  0-9, A-Z, or a-z.  Space Characters are any of the set HT,
  LF, VT, FF, CR, or SP.
