random: Improve explanation of Xoshiro jumping

Co-authored-by: George Peter Banyard <girgias@php.net>

Author: TimWolla

reference/random/random/engine/xoshiro256starstar/jump.xml

@@ -16,12 +16,12 @@
    <function>Random\Engine\Xoshiro256StarStar::generate</function> was called
    2<superscript>128</superscript> times.
   </para>
-
   <para>
-   Jumping allows for splitting a single seeded <classname>Random\Engine\Xoshiro256StarStar</classname>
-   engine instance into 2<superscript>128</superscript> non-overlapping instances with 2<superscript>128</superscript>
-   values each, by repeatedly <link linkend="language.oop5.cloning">cloning</link> and
-   then jumping an engine acting as a blueprint.
+   The purpose of a jump is to facilitate the creation of a new <classname>Random\Engine\Xoshiro256StarStar</classname>
+   engine from an existing seeded <classname>Random\Engine\Xoshiro256StarStar</classname> engine.
+   The seeded engine acts as a blueprint, which can be <link linkend="language.oop5.cloning">cloned</link>
+   and repeatedly jumped to create 2<superscript>128</superscript> non-overlapping sequences with
+   2<superscript>128</superscript> values each.
   </para>
  </refsect1>
 

reference/random/random/engine/xoshiro256starstar/jumplong.xml

@@ -16,18 +16,17 @@
    <function>Random\Engine\Xoshiro256StarStar::generate</function> was called
    2<superscript>192</superscript> times.
   </para>
-
   <para>
-   Long jumping allows for splitting a single seeded <classname>Random\Engine\Xoshiro256StarStar</classname>
-   engine instance into 2<superscript>64</superscript> non-overlapping instances with 2<superscript>192</superscript>
-   values each, by repeatedly <link linkend="language.oop5.cloning">cloning</link> and then
-   long jumping an engine acting as a blueprint.
+   The purpose of a long jump is to facilitate the creation of a new <classname>Random\Engine\Xoshiro256StarStar</classname>
+   engine from an existing seeded <classname>Random\Engine\Xoshiro256StarStar</classname> engine.
+   The seeded engine acts as a blueprint, which can be <link linkend="language.oop5.cloning">cloned</link>
+   and repeatedly jumped to create 2<superscript>64</superscript> non-overlapping sequences with
+   2<superscript>192</superscript> values each.
   </para>
-
   <para>
    Long jumping may be combined with <function>Random\Engine\Xoshiro256StarStar::jump</function>ing
-   by further splitting each of the 2<superscript>64</superscript> instances generated by long jumping,
-   into 2<superscript>128</superscript> instances of 2<superscript>64</superscript> values each.
+   to further split each of the 2<superscript>64</superscript> sequences generated by long jumping,
+   into 2<superscript>128</superscript> sequences of 2<superscript>64</superscript> values each.
   </para>
  </refsect1>