docs: create quickrun execution page

docs/guide/execution/execution_theory.rst

@@ -1,5 +1,7 @@
-Protocols and the Execution Model
-=================================
+.. _userguide_execution_theory:
+
+Protocols and the Execution Model Theory
+========================================
 
 Protocols in OpenFE are built on a flexible execution model. 
 Result objects are shaped by this model, and therefore some basic

docs/guide/execution/index.rst

@@ -1,17 +1,14 @@
 .. _userguide_execution:
 
 Execution
----------
+=========
 
-Given a :class:`.Transformation`, the easiest way to run it is to use the
-:func:`.execute_DAG` method. This will take the `.Transformation` object
-and execute its `.ProtocolUnit` instances serially. Once complete it will
-return a  :class:`.ProtocolDAGResult`. Multiple ProtocolDAGResults from a given
-transformation can be analyzed together with :meth:`.Protocol.gather` to
-create a :class:`.ProtocolResult`.
-
-
-.. TODO: add information about failures etc...
+With a :class:`.Transformation` defined, the next step is to execute this.
+The easiest way to run it is to use the :ref:`quickrun CLI tool <userguide_quickrun>`.
+More advanced options are available through first considering the
+:ref:`theory of the execution model<userguide_execution_theory>`
+then :ref:`reading on the available Python functions<reference_execution>`.
 
 .. toctree::
-   execution
+   quickrun_execution
+   execution_theory

docs/guide/execution/quickrun_execution.rst

@@ -0,0 +1,5 @@
+.. _userguide_quickrun:
+
+Execution with Quickrun
+=======================
+

docs/reference/api/defining_and_executing_simulations.rst

@@ -1,3 +1,5 @@
+.. _reference_execution:
+
 Defining and Executing Simulations
 ==================================