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The String Package

   The String package is a set of standard functions for manipulating null
   (0) terminated strings. Most of the functions within the package are
   ANSI, but there are a number of additional functions provided. Many of
   these functions are closely related to functions in the Memory package.

   The package can be split into 5 functional groups and a number of
   miscellaneous functions. They are organized as follow:

Copying Functions

   These are functions that allow strings to be copied. Functions that fall
   into this category are:

   strcpy
   stpcpy
   strdup
   strncpy

Concatenation Functions

   These are string concatenation functions which mirror the copying
   functions. Concatenation means that the source string is appended to the
   destination string instead of being copied over it. Functions that fall
   into this category are:

   strcat
   strncat

Comparison Functions

   These functions allow strings to be compared with other strings, or parts
   of other strings. Functions that fall into this category are:

   strcmp
   strcmpl
   strncmp
   strncmpl
   strnicmp

Conversion Functions

   These functions convert the contents of a string into a different
   representation. Functions that fall into this category are:

   strlwr
   strupr

Search Functions

   These functions search a string for a given character or sequence of
   characters. Functions that fall into this category are:

   strchr
   strcspn
   strpbrk
   strrchr
   strspn
   strstr
   strtok

Miscellaneous Functions

   Finally we have some miscellaneous string functions which do not fit into
   any other category:

   strlen
   strnset
   strrev
   strset