added set ops

docs/appendix-a-index.txt

@@ -236,7 +236,7 @@ context, alias to [**code**()](#code-context)
 [*junctive*](appendix-g-glossary#junction)
 [*AND*](appendix-g-glossary#and),
 requires that all conditions are met —
-see also: [**all**](#all)
+see also: [**all**](#all), [(&)](appendix-a-index#ampersand-set-op)
 
 <a id="ampersand-metachar"/>
 **&**
@@ -273,6 +273,30 @@ encompass a *subregex*, results (*submatches*) land in
 [**\@()**](#round-brackets-var) or [**\$0**](#0-var)... (not limited to $9 anymore) &mdash;
 see also: [**\[ \]** «metachar»](#square-brackets-metachar)
 
+<a id="ampersand-set-op"/><a id="set-and"/>
+**(&)**
+[*«set op»*](appendix-b-grouped#sets) &mdash;
+[*infix*](appendix-g-glossary#infix)
+[*AND*](appendix-g-glossary#and) join operator for two sets
+&mdash;
+see also: [&](appendix-a-index#ampersand-op)
+
+<a id="caret-set-op"/><a id="set-xor"/>
+**(\^)**
+[*«set op»*](appendix-b-grouped#sets) &mdash;
+[*infix*](appendix-g-glossary#infix)
+[*XOR*](appendix-g-glossary#xor) join operator for two sets
+&mdash;
+see also: [\^](appendix-a-index#caret-op)
+
+<a id="pipe-set-op"/><a id="set-or"/>
+**(|)**
+[*«set op»*](appendix-b-grouped#sets) &mdash;
+[*infix*](appendix-g-glossary#infix)
+[*OR*](appendix-g-glossary#or) joining operator for two sets
+&mdash;
+see also: [|](appendix-a-index#pipe-op)
+
 <a id="round-brackets-var"/>
 **@( )**
 [*«special var»*](appendix-b-grouped#match-variables) &mdash;
@@ -943,7 +967,7 @@ see also: [**|**](#pipe-escape)
 [*XOR*](appendix-g-glossary#xor),
 requires that exactly one of operands is [**True**](#True) in 
 [*bool context*](appendix-g-glossary#bool-context) to return **True** &mdash;
-see also [**one**](#one)
+see also [**one**](#one), [(\^)](appendix-a-index#caret-set-op)
 
 <a id="caret-upto"/>
 **\^** &mdash;
@@ -1011,7 +1035,7 @@ or a hashref when it is identified as a hash by the
 [*«junctive op»*](appendix-b-grouped#junctions) &mdash;
 [*junctive*](appendix-g-glossary#junction) [*OR*](appendix-g-glossary#or),
 requires that a condition is fulfilled &mdash;
-see also: [**any**](#any)
+see also: [**any**](#any), [(|)](appendix-a-index#pipe-set-op)
 
 <a id="pipe-metachar"/>
 **|**

docs/appendix-b-grouped.txt

@@ -535,7 +535,7 @@ Junctions
 ---------
 
 The [**infix**](appendix-a-index#infix-category)
-[*ops*](appendix-g-glossary#operator) in the first columns create
+[*ops*](appendix-g-glossary#operator) in the first column create
 [*junctions*](appendix-g-glossary#junction) by combining two values
 (can be [**Junctions**](appendix-a-index#Junction-type) itself),
 the ops in second column are to be applied to a [*list*](appendix-g-glossary#list)
@@ -550,6 +550,21 @@ Junctive Infix Op                   Prefix Op                      Operation
 ----------------------------------  -----------------------------  ----------------------------------  -----------------------------------------------
 
 
+Sets
+----
+
+The [**infix**](appendix-a-index#infix-category)
+[*ops*](appendix-g-glossary#operator) in the first column create
+a [*set*](appendix-g-glossary#set) with the following rules:
+
+Set Op                                     Meaning
+----------------------------------------  ---  -----------------------------------------------
+[(&)](appendix-a-index#ampersand-set-op)  AND  elements, which are in both sets
+[(\^)](appendix-a-index#caret-set-op)     XOR  elements, which are only in one of both sets
+[(|)](appendix-a-index#pipe-set-op)       OR   elements, which are in one or both sets
+----------------------------------------  ---  -----------------------------------------------
+
+
 Smartmatch
 ----------
 

docs/appendix-g-glossary.txt

@@ -911,6 +911,14 @@ is usable. It is normally the current surrounding [*block*](#block)
 or (if there is none) the current file.
 
 
+<a id="set"/>
+**set** &mdash;
+unordered, finite collection of values without duplicates.
+Most commonly all elements have the same type.
+Sets have in Perl 6 their own special container type called
+[**Set**](appendix-a-index#Set-type).
+
+
 <a id="sigil"/>
 **sigil** &mdash;
 Character that serves as a [*prefix*](#prefix) to categorize the following name