1 files changed, 13 insertions, 40 deletions
diff --git a/docs/cqueue_api.md b/docs/cqueue_api.md
index 8bd9f15e..16e87d47 100644
--- a/docs/cqueue_api.md
+++ b/docs/cqueue_api.md
@@ -1,20 +1,23 @@
 # STC [cqueue](../include/stc/cqueue.h): Queue
 ![Queue](pics/queue.jpg)
 
-The **cqueue** is container adapter that gives the programmer the functionality of a queue - specifically, a FIFO (first-in, first-out) data structure. The class template acts as a wrapper to the underlying container - only a specific set of functions is provided. The queue pushes the elements on the back of the underlying container and pops them from the front.
+The **cqueue** is container that gives the programmer the functionality of a queue - specifically, a FIFO (first-in, first-out) data structure. The queue pushes the elements on the back of the underlying container and pops them from the front.
 
 See the c++ class [std::queue](https://en.cppreference.com/w/cpp/container/queue) for a functional reference.
 
 ## Header file and declaration
 ```c
-#include <stc/cqueue.h> /* includes default underlying implementation header cdeq.h */
-
-using_cqueue(X, ctype)
+#define i_tag       // defaults to i_val name
+#define i_val       // value: REQUIRED
+#define i_cmp       // three-way compare two i_valraw* : REQUIRED IF i_valraw is a non-integral type
+#define i_valraw    // convertion "raw" type - defaults to i_val
+#define i_valfrom   // convertion func i_valraw => i_val - defaults to plain copy
+#define i_valto     // convertion func i_val* => i_valraw - defaults to plain copy
+#define i_valdel    // destroy value func - defaults to empty destruct
+#include <stc/cqueue.h>
 ```
-The macro `using_cqueue()` must be instantiated in the global scope. **cqueue** uses normally
-a **cdeq_X** or **clist_X** type as underlying implementation, given as `ctype`. See example below for usage.
-`X` is a type tag name and will affect the names of all cqueue types and methods. E.g. declaring
-`using_cqueue(i, clist_i)`, `X` should be replaced by `i` in all of the following documentation.
+`X` should be replaced by the value of i_tag in all of the following documentation.
+
 
 ## Methods
 
@@ -54,42 +57,12 @@ cqueue_X_value_t        cqueue_X_value_clone(cqueue_X_value_t val);
 
 ## Examples
 ```c
+#define i_tag i
+#define i_val int
 #include <stc/cqueue.h>
-#include <stdio.h>
-
-using_cdeq(i, int);
-using_cqueue(i, cdeq_i);
-
-int main() {
-    cqueue_i Q = cqueue_i_init();
-
-    // push() and pop() a few.
-    c_forrange (i, 20)
-        cqueue_i_push(&Q, i);
-
-    c_forrange (5)
-        cqueue_i_pop(&Q);
-
-    c_foreach (i, cqueue_i, Q)
-        printf(" %d", *i.ref);
 
-    cqueue_i_del(&Q);
-}
-```
-Output:
-```
-5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
-```
-### Example 2
-Use clist as underlying cqueue implementation.
-```c
-#include <stc/cqueue.h>
-#include <stc/clist.h>
 #include <stdio.h>
 
-using_clist(i, int);
-using_cqueue(i, clist_i);
-
 int main() {
     cqueue_i Q = cqueue_i_init();