Mention how to capitalize strings

lib/Language/traps.pod

@@ -201,6 +201,26 @@ last element of an array becomes:
     my @array = qw{victor alice bob charlie eve};
     say @array[*-1];   #=>  eve
 
+=head1 Strings
+
+=head2 Capitalizing a string
+
+In Perl 5 one could capitalize a string by using the C<ucfirst> function
+
+    say ucfirst "alice"; #=> Alice
+
+The C<ucfirst> function does not exist in Perl 6; one needs to use the
+C<tclc> method:
+
+    say "alice".tclc;    #=> Alice
+
+which is equivalent to
+
+    say tclc "alice";    #=> Alice
+
+Here, C<tclc> means "title case for the first character, lower case for the
+remaining characters".
+
 =end pod
 
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