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+\section{\module{curses.ascii} ---
+         Constants and set-membership functions for ASCII characters.}
+
+\declaremodule{standard}{curses.ascii}
+\modulesynopsis{Constants and set-membership functions for ASCII characters.}
+\moduleauthor{Eric S. Raymond}{esr@thyrsus.com}
+\sectionauthor{Eric S. Raymond}{esr@thyrsus.com}
+
+\versionadded{1.6}
+
+The \module{curses.ascii} module supplies name constants for ASCII characters
+and functions to test membership in various ASCII character classes.  
+The constants supplied are names for control characters as follows:
+
+NUL, SOH, STX, ETX, EOT, ENQ, ACK, BEL, BS, TAB, HT, LF, NL, VT, FF, CR,
+SO, SI, DLE, DC1, DC2, DC3, DC4, NAK, SYN, ETB, CAN, EM, SUB, ESC, FS, 
+GS, RS, US, SP, DEL.
+
+NL and LF are synonyms; so are HT and TAB.  The module also supplies
+the following functions, patterned on those in the standard C library:
+
+\begin{funcdesc}{isalnum}{c}
+Checks for an ASCII alphanumeric character; it is equivalent to
+isalpha(c) or isdigit(c))
+\end{funcdesc}
+
+\begin{funcdesc}{isalpha}{c}
+Checks for an ASCII alphabetic character; it is equivalent to
+isupper(c) or islower(c))
+\end{funcdesc}
+
+\begin{funcdesc}{isascii}{c}
+Checks for a character value that fits in the 7-bit ASCII set.
+\end{funcdesc}
+
+\begin{funcdesc}{isblank}{c}
+Checks for an ASCII alphanumeric character; it is equivalent to
+isalpha(c) or isdigit(c))
+\end{funcdesc}
+
+\begin{funcdesc}{iscntrl}{c}
+Checks for an ASCII control character (range 0x00 to 0x1f).
+\end{funcdesc}
+
+\begin{funcdesc}{isdigit}{c}
+Checks for an ASCII decimal digit, 0 through 9.
+\end{funcdesc}
+
+\begin{funcdesc}{isgraph}{c}
+Checks for ASCII any printable character except space.
+\end{funcdesc}
+
+\begin{funcdesc}{islower}{c}
+Checks for an ASCII lower-case character.
+\end{funcdesc}
+
+\begin{funcdesc}{isprint}{c}
+Checks for any ASCII printable character including space.
+\end{funcdesc}
+
+\begin{funcdesc}{ispunct}{c}
+Checks for any printable ASCII character which is not a space or an
+alphanumeric character.
+\end{funcdesc}
+
+\begin{funcdesc}{isspace}{c}
+Checks for ASCII white-space characters; space, tab, line feed,
+carriage return, form feed, horizontal tab, vertical tab.
+\end{funcdesc}
+
+\begin{funcdesc}{isupper}{c}
+Checks for an ASCII uppercase letter.
+\end{funcdesc}
+
+\begin{funcdesc}{isxdigit}{c}
+Checks for an ASCII hexadecimal digit, i.e. one of 0123456789abcdefABCDEF.
+\end{funcdesc}
+
+\begin{funcdesc}{isctrl}{c}
+Checks for an ASCII control character, bit values 0 to 31.
+\end{funcdesc}
+
+\begin{funcdesc}{ismeta}{c}
+Checks for a (non-ASCII) character, bit values 0x80 and above.
+\end{funcdesc}
+
+These functions accept either integers or strings; when the argument
+is a string, it is first converted using the built-in function ord().
+
+Note that all these functions check ordinal bit values derived from the 
+first character of the string you pass in; they do not actually know
+anything about the host machine's character encoding.  For functions 
+that know about the character encoding (and handle
+internationalization properly) see the string module.
+
+The following two functions take either a single-character string or
+integer byte value; they return a value of the same type.
+
+\begin{funcdesc}{ascii}{c}
+Return the ASCII value corresponding to the low 7 bits of c.
+\end{funcdesc}
+
+\begin{funcdesc}{ctrl}{c}
+Return the control character corresponding to the given character
+(the character bit value is logical-anded with 0x1f).
+\end{funcdesc}
+
+\begin{funcdesc}{alt}{c}
+Return the 8-bit character corresponding to the given ASCII character
+(the character bit value is logical-ored with 0x80).
+\end{funcdesc}
+
+The following function takes either a single-character string or
+integer byte value; it returns a string.
+
+\begin{funcdesc}{unctrl}{c}
+Return a string representation of the ASCII character c.  If c is
+printable, this string is the character itself.  If the character
+is a control character (0x00-0x1f) the string consists of a caret
+(^) followed by the corresponding uppercase letter.  If the character
+is an ASCII delete (0x7f) the string is "^?".  If the character has
+its meta bit (0x80) set, the meta bit is stripped, the preceding rules
+applied, and "!" prepended to the result.
+\end{funcdesc}
+
+Finally, the module supplies a 33-element string array 
+called controlnames that contains the ASCII mnemonics for the
+thirty-two ASCII control characters from 0 (NUL) to 0x1f (US),
+in order, plus the mnemonic "SP" for space.
+
+