diff -r 343bff4cc0b5 -r a3e63cb21e20 docs/src/modules.md
--- a/docs/src/modules.md	Tue May 29 10:02:55 2018 +0200
+++ b/docs/src/modules.md	Tue May 29 11:05:12 2018 +0200
@@ -580,13 +580,17 @@
        This version is especially useful for function arguments */
 sstr_t c = S("hello");
 
-/* (4) ST() macro creates sstr_t struct literal using sizeof() */
-sstr_t d = ST("hello");
+/* (4) SC() macro works like S(), but makes the string immutable using scstr_t.
+       (available since UCX 2.0) */
+scstr_t d = SC("hello");
+
+/* (5) ST() macro creates sstr_t struct literal using sizeof() */
+sstr_t e = ST("hello");
 ```
 
-You should not use the `S()` or `ST()` macro with string of unknown origin,
-since the `sizeof()` call might not coincide with the string length in those
-cases. If you know what you are doing, it can save you some performance,
+You should not use the `S()`, `SC()`, or `ST()` macro with string of unknown
+origin, since the `sizeof()` call might not coincide with the string length in
+those cases. If you know what you are doing, it can save you some performance,
 because you do not need the `strlen()` call.
 
 ### Handling immutable strings
@@ -655,6 +659,19 @@
 
 The memory pool ensures, that all strings are freed.
 
+### Disabling convenience macros
+
+If you are experiencing any troubles with the short convenience macros `S()`,
+`SC()`, or `ST()`, you can disable them by setting the macro
+`UCX_NO_SSTR_SHORTCUTS` before including the header (or via a compiler option).
+For the formatting macros `SFMT()` and `PRIsstr` you can use the macro
+`UCX_NO_SSTR_FORMAT_MACROS` to disable them.
+
+Please keep in mind, that after disabling the macros, you cannot use them in
+your code *and* foreign code that you might have included.
+You should only disable the macros, if you are experiencing a nasty name clash
+which cannot be otherwise resolved.
+
 ## Testing
 
 *Header file:* [test.h](api/test_8h.html)