diff --git a/src/modules/registrar/README b/src/modules/registrar/README
index 2a611ef564c..796832b3a43 100644
--- a/src/modules/registrar/README
+++ b/src/modules/registrar/README
@@ -896,8 +896,9 @@ request_route {
    location records (in usrloc) depending on Contact and Expires header
    fields in the REGISTER message. On success and when called from the
    REQUEST_ROUTE, “200 OK” will be returned listing all contacts that are
-   currently in the location database. On an error, an error message will
-   be sent with a short description in reason phrase.
+   currently in the location database. As a side effect, also branch flags
+   are stored in usrloc. On an error, an error message will be sent with a
+   short description in reason phrase.
 
    Meaning of the parameters is as follows:
      * domain - Logical domain within the registrar. If a database is used
@@ -945,7 +946,8 @@ save("location", "0x00", "sip:test@kamailio.org");
    no such contacts, -1 will be returned. If there are such contacts,
    Request-URI will be overwritten with the contact that has the highest q
    value and optionally the rest will be appended to the message
-   (depending on append_branches parameter value).
+   (depending on append_branches parameter value). As a side effect, also
+   branch flags are restored from usrloc.
 
    If the method_filtering option is enabled and request is initial
    request without to-tag, the lookup function will return only the
diff --git a/src/modules/textops/README b/src/modules/textops/README
index 32ed2c4d36c..aafe3906380 100644
--- a/src/modules/textops/README
+++ b/src/modules/textops/README
@@ -721,10 +721,13 @@ if (has_body("multipart/mixed")) {
 
 4.23.  append_to_reply(txt)
 
-   Append txt as header to the reply.
+   Append txt as header to the reply that is going to be generated by
+   Kamailio (e.g., via sl_send_reply(...)).
 
    Meaning of the parameters is as follows:
-     * txt - String which may contains pseudo-variables.
+     * txt - String which may contains pseudo-variables. Note that the
+       value has to be ended with "\r\n" (end of header characters
+       sequence).
 
    This function can be used from REQUEST_ROUTE, BRANCH_ROUTE,
    FAILURE_ROUTE, ERROR_ROUTE.
@@ -737,12 +740,14 @@ append_to_reply("Foo: $rm at $Ts\r\n");
 
 4.24.  append_hf(txt[, hdr])
 
-   Appends 'txt' as header after first header field or after last 'hdr'
-   header field.
+   Appends 'txt' as header at the end of the all headers, or after last
+   header named 'hdr' if the second parameter is provided.
 
    Meaning of the parameters is as follows:
      * txt - Header field to be appended. The value can contain
-       pseudo-variables which will be replaced at run time.
+       pseudo-variables which will be replaced at run time. Note that the
+       value has to be ended with "\r\n" (end of header characters
+       sequence).
      * hdr - Header name after which the 'txt' is appended.
 
    This function can be used from REQUEST_ROUTE, ONREPLY_ROUTE,
@@ -756,12 +761,14 @@ append_hf("From-username: $fU\r\n", "Call-ID");
 
 4.25.  insert_hf(txt[, hdr])
 
-   Inserts 'txt' as header before the first header field or before first
-   'hdr' header field if 'hdr' is given.
+   Inserts 'txt' as header before the first header field, or before first
+   header named 'hdr'if the second parameter is provided.
 
    Meaning of the parameters is as follows:
      * txt - Header field to be inserted. The value can contain
-       pseudo-variables which will be replaced at run time.
+       pseudo-variables which will be replaced at run time. Note that the
+       value has to be ended with "\r\n" (end of header characters
+       sequence).
      * hdr - Header name before which the 'txt' is inserted.
 
    This function can be used from REQUEST_ROUTE, ONREPLY_ROUTE,