@@ -16,6 +16,83 @@
 
 /**
  * A class for storing and modifying strings.
  */
 @interface OFMutableString: OFString
+/**
+ * Sets the OFString to the specified OFString.
+ *
+ * \param str An OFString to set the OFString to.
+ */
+- setToCString: (const char*)str;
+
+/**
+ * Appends another OFString to the OFString.
+ *
+ * \param str An OFString to append
+ */
+- append: (OFString*)str;
+
+/**
+ * Appends a C string to the OFString.
+ *
+ * \param str A C string to append
+ */
+- appendCString: (const char*)str;
+
+/**
+ * Appends a formatted C string to the OFString.
+ * See printf for the format syntax.
+ *
+ * \param fmt A format string which generates the string to append
+ */
+- appendWithFormat: (OFString*)fmt, ...;
+
+/**
+ * Appends a formatted C string to the OFString.
+ * See printf for the format syntax.
+ *
+ * \param fmt A format string which generates the string to append
+ * \param args The arguments used in the format string
+ */
+- appendWithFormat: (OFString*)fmt
+      andArguments: (va_list)args;
+
+/**
+ * Reverse the OFString.
+ */
+- reverse;
+
+/**
+ * Upper the OFString.
+ */
+- upper;
+
+/**
+ * Lower the OFString.
+ */
+- lower;
+
+/**
+ * Replaces all occurrences of a string with another string.
+ *
+ * \param str The string to replace
+ * \param repl The string with which it should be replaced
+ */
+- replaceOccurrencesOfString: (OFString*)str
+		  withString: (OFString*)repl;
+
+/**
+ * Removes all whitespaces at the beginning of a string.
+ */
+- removeLeadingWhitespaces;
+
+/**
+ * Removes all whitespaces at the end of a string.
+ */
+- removeTrailingWhitespaces;
+
+/**
+ * Removes all whitespaces at the beginning and the end of a string.
+ */
+- removeLeadingAndTrailingWhitespaces;
 @end