diff --git a/Docs/src/compiler.but b/Docs/src/compiler.but
index 0da640de..c4be5a45 100644
--- a/Docs/src/compiler.but
+++ b/Docs/src/compiler.but
@@ -274,13 +274,13 @@ Standard predefines that contain information about the current code scope.
 Defined in the global scope.
 
 \c Section test
-\c   !ifdef ${__GLOBAL__}
+\c   !ifdef __GLOBAL__
 \c     !error "this shouldn't be here!"
 \c   !endif
 \c SectionEnd
 \c
 \c PageEx instfiles
-\c   !ifdef ${__GLOBAL__}
+\c   !ifdef __GLOBAL__
 \c     !error "this shouldn't be here!"
 \c   !endif
 \c PageExEnd
diff --git a/Include/StrFunc.nsh b/Include/StrFunc.nsh
index dd045e7c..e4a09262 100644
--- a/Include/StrFunc.nsh
+++ b/Include/StrFunc.nsh
@@ -6,6 +6,15 @@ o-----------------------------------------------------------------------------o
 | <cevo_deguix@yahoo.com.br>                   -------------------------------|
 |                                                                             |
 |    This header file contains NSIS functions for string manipulation.        |
+|                                                                    ---------|
+| !include "StrFunc.nsh"                                            / Example |
+| ${Using:StrFunc} StrRep                                          -----------|
+|                                                                             |
+| Section                                                                     |
+| ${StrRep} $0 "Hello world!" "world" "everyone"                              |
+| MessageBox mb_ok $0                                                         |
+| SectionEnd                                                                  |
+|                                                                             |
 o-----------------------------------------------------------------------------o
 */
 
@@ -86,12 +95,15 @@ o-----------------------------------------------------------------------------o
       !define `${Name}` `!insertmacro STRFUNC_CALL_${Name} "${un}" `
       !define `Un${Name}` `!insertmacro STRFUNC_CALL_${Name} "${un}" `
     !else
-      !define `${Name}` `!insertmacro STRFUNC_MAKEFUNC ${Name} ""`
-      !define `Un${Name}` `!insertmacro STRFUNC_MAKEFUNC ${Name} Un`
+      !define `${Name}` `!insertmacro STRFUNC_MAKEFUNC ${Name} "" #`
+      !define `Un${Name}` `!insertmacro STRFUNC_MAKEFUNC ${Name} Un #`
     !endif
   !macroend
 
   !macro STRFUNC_MAKEFUNC basename un
+    !ifndef __GLOBAL__
+      !error "You forgot ${U+24}{Using:StrFunc} ${un}${basename}"
+    !endif
     !insertmacro STRFUNC_MAKEFUNC_${basename}
   !macroend