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+# $EPIC: realpath.txt,v 1.1.1.1 2006/07/11 04:57:43 jnelson Exp $
+======Synopsis:======
+$__realpath__(<filepath>)
+======Technical:======
+   * If the <filepath> argument is omitted the empty string is returned.
+   * If the operating system does not have the realpath(3) function call, the <filepath> argument is returned.
+   * All directories, if any, in <filepath> must exist; if any of them do not exist the empty string is returned.
+   * The return function is the full absolute path of <filepath> with all symbolic links, `.', `..' and extra '/'s references resolved.
+   * This function calls the operating system's realpath(3) function.
+======Practical:======
+Useful if you want to find the absolute path of filename with '.' or
+'..' or symbolic links in it.
+======Returns:======
+The absolute path equivalent of <filepath>
+======Examples:======
+If /home is a symbolic link to /usr/home, and /usr/local is a link
+to /local, then
+<file>
+$realpath(/home/../local/src)  returns "/local/src"
+ (/home -> /usr/home
+  ..    -> /usr
+  local -> /local
+  src   -> /local/src)
+</file>